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/__init__.py

@@ -24,7 +24,8 @@ from .anime_sites import (
 from .series_sites import (
     BaseSeriesSite,
     get_series_site,
-    FS7Downloader
+    FS7Downloader,
+    ZoneTelechargementDownloader
 )
 
 
@@ -67,6 +68,3 @@ class GenericDownloader(BaseDownloader):
         # Just return the URL as-is
         filename = target_filename or url.split('/')[-1] or "download"
         return url, filename
-        # Just return the URL as-is
-        filename = url.split('/')[-1] or "download"
-        return url, filename