feat: optimize JSON sync with 1 API call + raw URLs

- Replace GitHub API calls (390+) with 1 API call + raw URL downloads
- Create GitHubJsonService for efficient JSON file syncing
- Reduce API rate limiting issues by 99.7%
- Add automatic page reload after successful sync
- Update tests to use new service
- Maintain same functionality with better performance

Performance improvement:
- Before: 390+ GitHub API calls (1 per JSON file)
- After: 1 GitHub API call + 389 raw URL downloads
- Raw URLs have no rate limits, making sync much more reliable

scripts/json/docker.json

@@ -56,4 +56,4 @@
       "type": "warning"
     }
   ]
-}
+}