Add custom routes to migration v2 (#14846)

## Context
Add routes to migration V2
- Resolvers
- Service v2
- Builder
- Validator
- Action runner

Next PR: Add to twenty-cli to sync routes with serverless

packages/twenty-server/src/engine/metadata-modules/route-trigger/route-trigger.entity.ts

@@ -0,0 +1,76 @@
+import {
+  Column,
+  CreateDateColumn,
+  Entity,
+  JoinColumn,
+  ManyToOne,
+  PrimaryGeneratedColumn,
+  Relation,
+  Unique,
+  UpdateDateColumn,
+} from 'typeorm';
+
+import { SyncableEntity } from 'src/engine/workspace-manager/workspace-sync/interfaces/syncable-entity.interface';
+
+import { RouteTriggerEntityRelationProperties } from 'src/engine/metadata-modules/route-trigger/types/flat-route-trigger.type';
+import { ServerlessFunctionEntity } from 'src/engine/metadata-modules/serverless-function/serverless-function.entity';
+
+export enum HTTPMethod {
+  GET = 'GET',
+  POST = 'POST',
+  PUT = 'PUT',
+  PATCH = 'PATCH',
+  DELETE = 'DELETE',
+}
+
+export const ROUTE_TRIGGER_ENTITY_RELATION_PROPERTIES = [
+  'serverlessFunction',
+] as const satisfies readonly RouteTriggerEntityRelationProperties[];
+
+@Entity({ name: 'routeTrigger', schema: 'core' })
+@Unique('IDX_ROUTE_TRIGGER_PATH_HTTP_METHOD_WORKSPACE_ID_UNIQUE', [
+  'path',
+  'httpMethod',
+  'workspaceId',
+])
+export class RouteTrigger
+  extends SyncableEntity
+  implements Required<RouteTrigger>
+{
+  @PrimaryGeneratedColumn('uuid')
+  id: string;
+
+  @Column({ nullable: false })
+  path: string;
+
+  @Column({ nullable: false, default: true })
+  isAuthRequired: boolean;
+
+  @Column({
+    type: 'enum',
+    enum: HTTPMethod,
+    default: HTTPMethod.GET,
+    nullable: false,
+  })
+  httpMethod: HTTPMethod;
+
+  @ManyToOne(
+    () => ServerlessFunctionEntity,
+    (serverlessFunction) => serverlessFunction.routeTriggers,
+    { onDelete: 'CASCADE' },
+  )
+  @JoinColumn({ name: 'serverlessFunctionId' })
+  serverlessFunction: Relation<ServerlessFunctionEntity>;
+
+  @Column({ nullable: false, type: 'uuid' })
+  serverlessFunctionId: string;
+
+  @Column({ nullable: false, type: 'uuid' })
+  workspaceId: string;
+
+  @CreateDateColumn({ type: 'timestamptz' })
+  createdAt: Date;
+
+  @UpdateDateColumn({ type: 'timestamptz' })
+  updatedAt: Date;
+}