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_core/src/config.rs

@@ -12,6 +12,22 @@ pub struct DatabaseConfig {
     pub url: String,
 }
 
+#[derive(Deserialize, Clone)]
+#[serde(rename_all = "lowercase")]
+pub enum ThumbnailFormat {
+    Jpeg,
+    Webp,
+}
+
+#[derive(Deserialize, Clone)]
+pub struct ThumbnailConfig {
+    pub format: ThumbnailFormat,
+    pub quality: u8,
+    pub width: u32,
+    pub height: u32,
+    pub library_path: String,
+}
+
 #[derive(Deserialize, Clone)]
 pub struct Config {
     pub database: DatabaseConfig,
@@ -22,4 +38,5 @@ pub struct Config {
     pub max_upload_size_mb: Option<u32>,
     pub default_storage_quota_gb: Option<u64>,
     pub allowed_sort_columns: Option<Vec<String>>,
+    pub thumbnail_config: Option<ThumbnailConfig>,
 }