Files v2 - FILES field update/create in common API (#17400)

## FILES Field update interface

```
mutation {
  updateCompany(
    id: "company-uuid"
    data: {
      filesfield: [
          { fileId: "new-file-uuid", label: "new-document.pdf" }
        ]
    }
  ) {
    id
    filesfield {
      fileId
      label
      extension
    }
  }
}
```

packages/twenty-server/src/engine/twenty-orm/interfaces/workspace-internal-context.interface.ts

@@ -1,3 +1,5 @@
+import { type DataSource } from 'typeorm';
+
 import { type FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 import { type FlatEntityMaps } from 'src/engine/metadata-modules/flat-entity/types/flat-entity-maps.type';
 import { type FlatFieldMetadata } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata.type';
@@ -18,4 +20,5 @@ export interface WorkspaceInternalContext {
   featureFlagsMap: Record<FeatureFlagKey, boolean>;
   userWorkspaceRoleMap: Record<string, string>;
   eventEmitterService: WorkspaceEventEmitter;
+  coreDataSource: DataSource;
 }