feat: implement thumbnail generation and management

- Remove unused image dependencies from Cargo.lock.
- Update API to handle thumbnail generation and checkup processes.
- Introduce new routes for rebuilding and regenerating thumbnails.
- Enhance job tracking with progress indicators for thumbnail jobs.
- Update front-end components to display thumbnail job status and progress.
- Add backend logic for managing thumbnail jobs and integrating with the API.
- Refactor existing code to accommodate new thumbnail functionalities.

Cargo.lock

@@ -1146,7 +1146,6 @@ dependencies = [
  "anyhow",
  "axum",
  "chrono",
- "image",
  "notify",
  "parsers",
  "rand 0.8.5",
@@ -1162,7 +1161,6 @@ dependencies = [
  "tracing-subscriber",
  "uuid",
  "walkdir",
- "webp",
 ]
 
 [[package]]