chore(server): introduce proper job status (#7932)

* introduce proper job status

* fix condition for onDone jobs

* fix tests

server/src/domain/repositories/job.repository.ts

@@ -94,7 +94,13 @@ export type JobItem =
   | { name: JobName.LIBRARY_QUEUE_SCAN_ALL; data: IBaseJob }
   | { name: JobName.LIBRARY_QUEUE_CLEANUP; data: IBaseJob };
 
-export type JobHandler<T = any> = (data: T) => boolean | Promise<boolean>;
+export enum JobStatus {
+  SUCCESS = 'success',
+  FAILED = 'failed',
+  SKIPPED = 'skipped',
+}
+
+export type JobHandler<T = any> = (data: T) => Promise<JobStatus>;
 export type JobItemHandler = (item: JobItem) => Promise<void>;
 
 export const IJobRepository = 'IJobRepository';