Move view in metadata-modules/ and create atomic folder + module for each view entity (#14990)

# Introduction
Preparing view-filter and view-group introduction in v2 core engine
Moving view from `core-modules` to `metadata-modules`

## What happened

### Created dedicated modules for each view entity:
- ViewFieldModule
- ViewFilterModule
- ViewFilterGroupModule
- ViewGroupModule
- ViewSortModule

### Each module is now completely independent with its own:
- Controller
- Resolver
- Service
- Entity

### Created dedicated abstraction metadata module folder for:
- flat-view-field
- flat-view

### Dependencies 
- Eleminated circular dep on ViewModule to all others ones
- Granular import not importing the whole viewModule anymore everywhere


close https://github.com/twentyhq/core-team-issues/issues/1703

packages/twenty-server/src/engine/metadata-modules/view/dtos/inputs/create-view.input.ts

@@ -0,0 +1,93 @@
+import { Field, InputType } from '@nestjs/graphql';
+
+import {
+  IsBoolean,
+  IsEnum,
+  IsNotEmpty,
+  IsNumber,
+  IsOptional,
+  IsString,
+  IsUUID,
+} from 'class-validator';
+
+import { AggregateOperations } from 'src/engine/api/graphql/graphql-query-runner/constants/aggregate-operations.constant';
+import { UUIDScalarType } from 'src/engine/api/graphql/workspace-schema-builder/graphql-types/scalars';
+import { IsValidMetadataName } from 'src/engine/decorators/metadata/is-valid-metadata-name.decorator';
+import { ViewCalendarLayout } from 'src/engine/metadata-modules/view/enums/view-calendar-layout.enum';
+import { ViewKey } from 'src/engine/metadata-modules/view/enums/view-key.enum';
+import { ViewOpenRecordIn } from 'src/engine/metadata-modules/view/enums/view-open-record-in';
+import { ViewType } from 'src/engine/metadata-modules/view/enums/view-type.enum';
+
+@InputType()
+export class CreateViewInput {
+  @IsOptional()
+  @IsUUID()
+  @Field(() => UUIDScalarType, { nullable: true })
+  id?: string;
+
+  @IsString()
+  @IsNotEmpty()
+  @IsValidMetadataName()
+  @Field({ nullable: false })
+  name: string;
+
+  @IsUUID()
+  @Field(() => UUIDScalarType, { nullable: false })
+  objectMetadataId: string;
+
+  @IsEnum(ViewType)
+  @Field(() => ViewType, { nullable: true, defaultValue: ViewType.TABLE })
+  type?: ViewType;
+
+  @IsOptional()
+  @IsEnum(ViewKey)
+  @Field(() => ViewKey, { nullable: true })
+  key?: ViewKey;
+
+  @IsString()
+  @Field({ nullable: false })
+  icon: string;
+
+  @IsOptional()
+  @IsNumber()
+  @Field({ nullable: true, defaultValue: 0 })
+  position?: number;
+
+  @IsOptional()
+  @IsBoolean()
+  @Field({ nullable: true, defaultValue: false })
+  isCompact?: boolean;
+
+  @IsOptional()
+  @IsEnum(ViewOpenRecordIn)
+  @Field(() => ViewOpenRecordIn, {
+    nullable: true,
+    defaultValue: ViewOpenRecordIn.SIDE_PANEL,
+  })
+  openRecordIn?: ViewOpenRecordIn;
+
+  @IsOptional()
+  @IsEnum(AggregateOperations)
+  @Field(() => AggregateOperations, { nullable: true })
+  kanbanAggregateOperation?: AggregateOperations;
+
+  @IsOptional()
+  @IsUUID()
+  @Field(() => UUIDScalarType, { nullable: true })
+  kanbanAggregateOperationFieldMetadataId?: string;
+
+  @IsOptional()
+  @IsString()
+  @Field({ nullable: true })
+  anyFieldFilterValue?: string;
+
+  @IsOptional()
+  @IsEnum(ViewCalendarLayout)
+  @Field(() => ViewCalendarLayout, { nullable: true })
+  calendarLayout?: ViewCalendarLayout;
+
+  @IsOptional()
+  @IsUUID()
+  @Field(() => UUIDScalarType, { nullable: true })
+  calendarFieldMetadataId?: string;
+}