Refactor metadata caching (#7011)

This PR introduces the following changes:
- add the metadataVersion to all our metadata cache keys to ease
troubleshooting:
<img width="1146" alt="image"
src="https://github.com/user-attachments/assets/8427805b-e07f-465e-9e69-1403652c8b12">
- introduce a cache recompute lock to avoid overloading the database to
recompute the cache many time

packages/twenty-server/src/engine/twenty-orm/exceptions/twenty-orm.exception.ts

@@ -0,0 +1,15 @@
+import { CustomException } from 'src/utils/custom-exception';
+
+export class TwentyORMException extends CustomException {
+  code: TwentyORMExceptionCode;
+  constructor(message: string, code: TwentyORMExceptionCode) {
+    super(message, code);
+  }
+}
+
+export enum TwentyORMExceptionCode {
+  METADATA_VERSION_NOT_FOUND = 'METADATA_VERSION_NOT_FOUND',
+  METADATA_VERSION_MISMATCH = 'METADATA_VERSION_MISMATCH',
+  METADATA_COLLECTION_NOT_FOUND = 'METADATA_COLLECTION_NOT_FOUND',
+  WORKSPACE_SCHEMA_NOT_FOUND = 'WORKSPACE_SCHEMA_NOT_FOUND',
+}