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/audiobookshelf.json

@@ -6,7 +6,7 @@
   ],
   "date_created": "2024-05-02",
   "type": "ct",
-  "updateable": false,
+  "updateable": true,
   "privileged": false,
   "interface_port": 13378,
   "documentation": "https://www.audiobookshelf.org/guides/",
@@ -21,7 +21,7 @@
       "resources": {
         "cpu": 2,
         "ram": 2048,
-        "hdd": 4,
+        "hdd": 5,
         "os": "debian",
         "version": "12"
       }
@@ -32,4 +32,4 @@
     "password": null
   },
   "notes": []
-}
+}