feat: add Zone-Telechargement provider and automatic TLD verification

- Implemented DomainManager in app/utils.py for TLD rotation and caching.
- Created ZoneTelechargementDownloader in app/downloaders/series_sites/zonetelechargement.py.
- Integrated Zone-Telechargement into series search and provider list.
- Updated .gitignore to exclude domain_cache.json.

app/providers.py

@@ -45,6 +45,13 @@ SERIES_PROVIDERS = {
         "url_pattern": "https://fs7.lol/s-tv/{slug}.html",
         "icon": "🎬",
         "color": "#ff6b9d"
+    },
+    "zonetelechargement": {
+        "name": "Zone-Telechargement",
+        "domains": ["zone-telechargement.cam", "zone-telechargement.net", "zone-telechargement.org", "zone-telechargement.blue", "zone-telechargement.lol", "zone-telechargement.work"],
+        "url_pattern": "https://zone-telechargement.cam/index.php?do=search",
+        "icon": "⬇️",
+        "color": "#00d9ff"
     }
 }