create groupBy resolver + mock groupBy service (#14530)

To test :

```
query : 
query companiesGroupBy($groupBy: CompanyGroupByInput){
  companiesGroupBy(groupBy: $groupBy){
    groupByDimensionValues
    countEmptyId
    sumAnnualRecurringRevenueAmountMicros
    countEmptyAddress
    percentageEmptySearchVector
  }
}

input : 
{"groupBy": {"name": true, "employees": true, "domainName": {"primaryLinkUrl": true}}}

response : 
{
  "data": {
    "companiesGroupBy": [
      {
        "groupByDimensionValues": [
          "Text 1",
          "twenty.com",
          "1"
        ],
        "countEmptyId": 39,
        "sumAnnualRecurringRevenueAmountMicros": 20,
        "countEmptyAddress": 56,
        "percentageEmptySearchVector": 88
      },
      {
        "groupByDimensionValues": [
          "Long long long long and long text 2",
          "github.com/twentyhq/twenty",
          "2"
        ],
        "countEmptyId": 20,
        "sumAnnualRecurringRevenueAmountMicros": 56,
        "countEmptyAddress": 88,
        "percentageEmptySearchVector": 2
      },
      {
        "groupByDimensionValues": [
          "Text 3",
          "react.dev",
          "3"
        ],
        "countEmptyId": 56,
        "sumAnnualRecurringRevenueAmountMicros": 88,
        "countEmptyAddress": 2,
        "percentageEmptySearchVector": 39
      }
    ]
  }
}
```
closes https://github.com/twentyhq/core-team-issues/issues/1439

packages/twenty-server/src/engine/api/graphql/workspace-resolver-builder/constants/resolver-method-names.ts

@@ -2,6 +2,7 @@ export const RESOLVER_METHOD_NAMES = {
   FIND_MANY: 'findMany',
   FIND_ONE: 'findOne',
   FIND_DUPLICATES: 'findDuplicates',
+  GROUP_BY: 'groupBy',
   CREATE_MANY: 'createMany',
   CREATE_ONE: 'createOne',
   UPDATE_MANY: 'updateMany',

packages/twenty-server/src/engine/api/graphql/workspace-resolver-builder/factories/factories.ts

@@ -1,5 +1,6 @@
 import { DestroyManyResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/destroy-many-resolver.factory';
 import { DestroyOneResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/destroy-one-resolver.factory';
+import { GroupByResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/group-by-resolver.factory';
 import { RestoreManyResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/restore-many-resolver.factory';
 import { RestoreOneResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/restore-one-resolver.factory';
 import { UpdateManyResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/update-many-resolver.factory';
@@ -29,6 +30,7 @@ export const workspaceResolverBuilderFactories = [
   RestoreOneResolverFactory,
   RestoreManyResolverFactory,
   MergeManyResolverFactory,
+  GroupByResolverFactory,
 ];
 
 export const workspaceResolverBuilderMethodNames = {
@@ -36,6 +38,7 @@ export const workspaceResolverBuilderMethodNames = {
     FindManyResolverFactory.methodName,
     FindOneResolverFactory.methodName,
     FindDuplicatesResolverFactory.methodName,
+    GroupByResolverFactory.methodName,
   ],
   mutations: [
     CreateManyResolverFactory.methodName,

packages/twenty-server/src/engine/api/graphql/workspace-resolver-builder/factories/group-by-resolver.factory.ts

@@ -0,0 +1,45 @@
+import { Injectable } from '@nestjs/common';
+
+import { type WorkspaceQueryRunnerOptions } from 'src/engine/api/graphql/workspace-query-runner/interfaces/query-runner-option.interface';
+import { type WorkspaceResolverBuilderFactoryInterface } from 'src/engine/api/graphql/workspace-resolver-builder/interfaces/workspace-resolver-builder-factory.interface';
+import {
+  GroupByResolverArgs,
+  type Resolver,
+} from 'src/engine/api/graphql/workspace-resolver-builder/interfaces/workspace-resolvers-builder.interface';
+import { WorkspaceSchemaBuilderContext } from 'src/engine/api/graphql/workspace-schema-builder/interfaces/workspace-schema-builder-context.interface';
+
+import { GraphqlQueryGroupByResolverService } from 'src/engine/api/graphql/graphql-query-runner/resolvers/graphql-query-group-by-resolver.service';
+import { RESOLVER_METHOD_NAMES } from 'src/engine/api/graphql/workspace-resolver-builder/constants/resolver-method-names';
+
+@Injectable()
+export class GroupByResolverFactory
+  implements WorkspaceResolverBuilderFactoryInterface
+{
+  public static methodName = RESOLVER_METHOD_NAMES.GROUP_BY;
+
+  constructor(
+    private readonly graphqlQueryRunnerService: GraphqlQueryGroupByResolverService,
+  ) {}
+
+  create(
+    context: WorkspaceSchemaBuilderContext,
+  ): Resolver<GroupByResolverArgs> {
+    const internalContext = context;
+
+    return async (_source, args, _context, info) => {
+      const options: WorkspaceQueryRunnerOptions = {
+        authContext: internalContext.authContext,
+        info,
+        objectMetadataMaps: internalContext.objectMetadataMaps,
+        objectMetadataItemWithFieldMaps:
+          internalContext.objectMetadataItemWithFieldMaps,
+      };
+
+      return await this.graphqlQueryRunnerService.execute(
+        args,
+        options,
+        GroupByResolverFactory.methodName,
+      );
+    };
+  }
+}

packages/twenty-server/src/engine/api/graphql/workspace-resolver-builder/interfaces/workspace-resolvers-builder.interface.ts

@@ -3,6 +3,7 @@ import { type GraphQLFieldResolver } from 'graphql';
 import {
   type ObjectRecord,
   type ObjectRecordFilter,
+  type ObjectRecordGroupBy,
   type ObjectRecordOrderBy,
 } from 'src/engine/api/graphql/workspace-query-builder/interfaces/object-record.interface';
 
@@ -64,6 +65,13 @@ export interface CreateManyResolverArgs<
   upsert?: boolean;
 }
 
+export interface GroupByResolverArgs<Filter = ObjectRecordFilter> {
+  filter?: Filter;
+  groupBy: ObjectRecordGroupBy;
+  viewId?: string;
+  orderBy?: ObjectRecordOrderBy;
+}
+
 export interface UpdateOneResolverArgs<
   Data extends Partial<ObjectRecord> = Partial<ObjectRecord>,
 > {
@@ -131,6 +139,7 @@ export interface WorkspaceResolverBuilderMethods {
 export type ResolverArgs =
   | CreateManyResolverArgs
   | CreateOneResolverArgs
+  | GroupByResolverArgs
   | DeleteManyResolverArgs
   | DeleteOneResolverArgs
   | DestroyManyResolverArgs

packages/twenty-server/src/engine/api/graphql/workspace-resolver-builder/workspace-resolver.factory.ts

@@ -6,6 +6,7 @@ import { isDefined } from 'twenty-shared/utils';
 import { DeleteManyResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/delete-many-resolver.factory';
 import { DestroyManyResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/destroy-many-resolver.factory';
 import { DestroyOneResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/destroy-one-resolver.factory';
+import { GroupByResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/group-by-resolver.factory';
 import { MergeManyResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/merge-many-resolver.factory';
 import { RestoreManyResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/restore-many-resolver.factory';
 import { RestoreOneResolverFactory } from 'src/engine/api/graphql/workspace-resolver-builder/factories/restore-one-resolver.factory';
@@ -54,6 +55,7 @@ export class WorkspaceResolverFactory {
     private readonly restoreManyResolverFactory: RestoreManyResolverFactory,
     private readonly destroyManyResolverFactory: DestroyManyResolverFactory,
     private readonly mergeManyResolverFactory: MergeManyResolverFactory,
+    private readonly groupByResolverFactory: GroupByResolverFactory,
     private readonly workspaceResolverBuilderService: WorkspaceResolverBuilderService,
     private readonly featureFlagService: FeatureFlagService,
   ) {}
@@ -81,6 +83,7 @@ export class WorkspaceResolverFactory {
       ['restoreOne', this.restoreOneResolverFactory],
       ['updateMany', this.updateManyResolverFactory],
       ['updateOne', this.updateOneResolverFactory],
+      ['groupBy', this.groupByResolverFactory],
     ]);
     const resolvers: IResolvers = {
       Query: {},