Standard migration command (#2236)

* Add Standard Object migration commands

* rebase

* add sync-tenant-metadata command

* fix naming

* renaming command class names

* remove field deletion and use object cascade instead

---------

Co-authored-by: Charles Bochet <charlesBochet@users.noreply.github.com>

server/src/metadata/migration-runner/migration-runner.service.ts

@@ -35,6 +35,10 @@ export class MigrationRunnerService {
     const pendingMigrations =
       await this.tenantMigrationService.getPendingMigrations(workspaceId);
 
+    if (pendingMigrations.length === 0) {
+      return [];
+    }
+
     const flattenedPendingMigrations: TenantMigrationTableAction[] =
       pendingMigrations.reduce((acc, pendingMigration) => {
         return [...acc, ...pendingMigration.migrations];