Add bulk delete functionality for loras and implement model duplicates management. See #198

- Introduced a new API endpoint for bulk deleting loras.
- Added ModelDuplicatesManager to handle duplicate models for loras and checkpoints.
- Implemented UI components for displaying duplicates and managing selections.
- Enhanced controls with a button for finding duplicates.
- Updated templates to include a duplicates banner and associated actions.

static/js/state/index.js

@@ -44,6 +44,7 @@ export const state = {
             selectedLoras: new Set(),
             loraMetadataCache: new Map(),
             showFavoritesOnly: false,
+            duplicatesMode: false,
         },
         
         recipes: {
@@ -86,6 +87,7 @@ export const state = {
                 tags: []
             },
             showFavoritesOnly: false,
+            duplicatesMode: false,
         }
     },