Refactor API endpoints to use '/api/lm/' prefix

- Updated all relevant routes in `stats_routes.py` and `update_routes.py` to include the new '/api/lm/' prefix for consistency.
- Modified API endpoint configurations in `apiConfig.js` to reflect the new structure, ensuring all CRUD and bulk operations are correctly routed.
- Adjusted fetch calls in various components and managers to utilize the updated API paths, including recipe, model, and example image operations.
- Ensured all instances of the old API paths were replaced with the new '/api/lm/' prefix across the codebase for uniformity and to prevent broken links.

static/js/components/shared/showcase/MediaUtils.js

@@ -408,7 +408,7 @@ export function initMediaControlHandlers(container) {
                 
                 try {
                     // Call the API to delete the custom example
-                    const response = await fetch('/api/delete-example-image', {
+                    const response = await fetch('/api/lm/delete-example-image', {
                         method: 'POST',
                         headers: {
                             'Content-Type': 'application/json'