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/utils/formatters.js

@@ -10,3 +10,14 @@ export function formatFileSize(bytes) {
     const i = Math.floor(Math.log(bytes) / Math.log(1024));
     return (bytes / Math.pow(1024, i)).toFixed(2) + ' ' + sizes[i];
 }
+
+/**
+ * Convert timestamp to human readable date string
+ * @param {number} modified - Timestamp in seconds
+ * @returns {string} Formatted date string
+ */
+export function formatDate(modified) {
+    if (!modified) return '';
+    const date = new Date(modified * 1000);
+    return date.toLocaleString();
+}