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/downloaders/series_sites/__init__.py

@@ -2,10 +2,12 @@
 from .base import BaseSeriesSite
 # Import all series site downloaders
 from .fs7 import FS7Downloader
+from .zonetelechargement import ZoneTelechargementDownloader
 
 __all__ = [
     "BaseSeriesSite",
     "FS7Downloader",
+    "ZoneTelechargementDownloader",
 ]
 
 
@@ -13,6 +15,7 @@ def get_series_site(url: str) -> BaseSeriesSite:
     """Factory function to get the appropriate series site for a URL"""
     sites = [
         FS7Downloader(),
+        ZoneTelechargementDownloader(),
     ]
 
     for site in sites: