Migrate metadata cache (#16030)

## Context
Deprecating legacy ObjectMetadata from cache in favor of flat entities.
Introducing utils to build byName/byNameSingular/byNamePlural in
isolated cases

## Next
- I had to introduce a util to build from flat to legacy
objectMetadataMaps, we should instead use flat maps directly when needed
(datasource, schema generation, etc)
- Deprecate metadata version in the cache
- Use the new cache strategy for flat entities with permissions and
feature flags and inject in the global datasource context

packages/twenty-server/src/engine/metadata-modules/object-metadata/object-metadata.module.ts

@@ -31,7 +31,6 @@ import { RemoteTableRelationsModule } from 'src/engine/metadata-modules/remote-s
 import { ViewFieldModule } from 'src/engine/metadata-modules/view-field/view-field.module';
 import { ViewEntity } from 'src/engine/metadata-modules/view/entities/view.entity';
 import { ViewModule } from 'src/engine/metadata-modules/view/view.module';
-import { WorkspaceMetadataCacheModule } from 'src/engine/metadata-modules/workspace-metadata-cache/workspace-metadata-cache.module';
 import { WorkspaceMetadataVersionModule } from 'src/engine/metadata-modules/workspace-metadata-version/workspace-metadata-version.module';
 import { WorkspaceMigrationModule } from 'src/engine/metadata-modules/workspace-migration/workspace-migration.module';
 import { WorkspacePermissionsCacheModule } from 'src/engine/metadata-modules/workspace-permissions-cache/workspace-permissions-cache.module';
@@ -61,7 +60,6 @@ import { WorkspaceMigrationV2Module } from 'src/engine/workspace-manager/workspa
         PermissionsModule,
         WorkspacePermissionsCacheModule,
         WorkspaceCacheStorageModule,
-        WorkspaceMetadataCacheModule,
         WorkspaceDataSourceModule,
         FeatureFlagModule,
         WorkspaceMigrationV2Module,