feat: Add thumbnail generation feature and update media model

- Updated workspace members to include `libertas_importer`.
- Added a new migration to add `thumbnail_path` column to `media` table.
- Enhanced configuration structures to include `thumbnail_config`.
- Modified `Media` model to include `thumbnail_path`.
- Updated `MediaRepository` trait and its implementation to handle thumbnail path updates.
- Created `ThumbnailPlugin` for generating thumbnails based on media configurations.
- Integrated thumbnail generation into the media processing workflow.
- Updated dependencies in `libertas_worker` and `libertas_importer` for image processing.

libertas_worker/src/main.rs

@@ -43,6 +43,7 @@ async fn main() -> anyhow::Result<()> {
         album_repo,
         user_repo,
         media_library_path: config.media_library_path.clone(),
+        config: Arc::new(config.clone()),
     });
     println!("Plugin context created.");