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-field/view-field.module.ts

@@ -0,0 +1,27 @@
+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+
+import { WorkspaceManyOrAllFlatEntityMapsCacheModule } from 'src/engine/core-modules/common/services/workspace-many-or-all-flat-entity-maps-cache.module';
+import { FeatureFlagModule } from 'src/engine/core-modules/feature-flag/feature-flag.module';
+import { ViewFieldController } from 'src/engine/metadata-modules/view-field/controllers/view-field.controller';
+import { ViewFieldEntity } from 'src/engine/metadata-modules/view-field/entities/view-field.entity';
+import { ViewFieldResolver } from 'src/engine/metadata-modules/view-field/resolvers/view-field.resolver';
+import { ViewFieldV2Service } from 'src/engine/metadata-modules/view-field/services/view-field-v2.service';
+import { ViewFieldService } from 'src/engine/metadata-modules/view-field/services/view-field.service';
+import { ViewEntity } from 'src/engine/metadata-modules/view/entities/view.entity';
+import { WorkspaceCacheStorageModule } from 'src/engine/workspace-cache-storage/workspace-cache-storage.module';
+import { WorkspaceMigrationV2Module } from 'src/engine/workspace-manager/workspace-migration-v2/workspace-migration-v2.module';
+
+@Module({
+  imports: [
+    TypeOrmModule.forFeature([ViewFieldEntity, ViewEntity]),
+    WorkspaceCacheStorageModule,
+    FeatureFlagModule,
+    WorkspaceMigrationV2Module,
+    WorkspaceManyOrAllFlatEntityMapsCacheModule,
+  ],
+  controllers: [ViewFieldController],
+  providers: [ViewFieldService, ViewFieldResolver, ViewFieldV2Service],
+  exports: [ViewFieldService, ViewFieldV2Service],
+})
+export class ViewFieldModule {}