fix(server): allow starting backup through API and fix pg_dumpall args when using database URLs (#13970)

* fix(server): allow starting backup through API

* fix(server): fix pg_dumpall args when using database URLs

The database has to be specified using `-d`, unlike for pg_dump.

server/src/services/job.service.ts

@@ -164,6 +164,10 @@ export class JobService extends BaseService {
         return this.jobRepository.queue({ name: JobName.LIBRARY_QUEUE_SYNC_ALL, data: { force } });
       }
 
+      case QueueName.BACKUP_DATABASE: {
+        return this.jobRepository.queue({ name: JobName.BACKUP_DATABASE, data: { force } });
+      }
+
       default: {
         throw new BadRequestException(`Invalid job name: ${name}`);
       }