Simplify ORM (#6373)

This PR refactors the ORM-Manager to simplify and unify the datasource
creation. I'm deprecating all usages if InjectWorkspaceDatasource and
InjectWorkspaceRepository as we can't be sure they are up-to-date

packages/twenty-server/src/engine/twenty-orm/utils/get-workspace-repository-token.util.ts

@@ -1,24 +0,0 @@
-import { EntityClassOrSchema } from '@nestjs/typeorm/dist/interfaces/entity-class-or-schema.type';
-
-import { EntitySchema, Repository } from 'typeorm';
-
-export function getWorkspaceRepositoryToken(
-  entity: EntityClassOrSchema,
-  // eslint-disable-next-line @typescript-eslint/ban-types
-): Function | string {
-  if (entity === null || entity === undefined) {
-    throw new Error('Circular dependency @InjectWorkspaceRepository()');
-  }
-
-  if (entity instanceof Function && entity.prototype instanceof Repository) {
-    return entity;
-  }
-
-  if (entity instanceof EntitySchema) {
-    return `${
-      entity.options.target ? entity.options.target.name : entity.options.name
-    }WorkspaceRepository`;
-  }
-
-  return `${entity.name}WorkspaceRepository`;
-}