chore(server): Store generated files (thumbnails, encoded video) in subdirectories (#4112)

* save thumbnails in subdirectories

* migration job, migrate assets and face thumbnails

* fix tests

* directory depth of two instead of three

* cleanup empty dirs after migration

* clean up empty dirs after migration, migrate people without assetId

* add job card for new migration job

* fix removeEmptyDirs race condition because of missing await

* cleanup empty directories after asset deletion

* move ensurePath to storage core

* rename jobs

* remove unnecessary property of IEntityJob

* use updated person getById, minor refactoring

* ensure that directory cleanup doesn't interfere with migration

* better description for job in ui

* fix remove directories when migration is done

* cleanup empty folders at start of migration

* fix: actually persist concurrency setting

* add comment explaining regex

* chore: cleanup

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

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

@@ -46,6 +46,11 @@ export type JobItem =
   | { name: JobName.STORAGE_TEMPLATE_MIGRATION_SINGLE; data: IEntityJob }
   | { name: JobName.SYSTEM_CONFIG_CHANGE; data?: IBaseJob }
 
+  // Migration
+  | { name: JobName.QUEUE_MIGRATION; data?: IBaseJob }
+  | { name: JobName.MIGRATE_ASSET; data?: IEntityJob }
+  | { name: JobName.MIGRATE_PERSON; data?: IEntityJob }
+
   // Metadata Extraction
   | { name: JobName.QUEUE_METADATA_EXTRACTION; data: IBaseJob }
   | { name: JobName.METADATA_EXTRACTION; data: IEntityJob }