Change observability service ports and add Arrtrix content management

- Update ports for Alloy, Grafana, Loki, Prometheus, Promtail, Tempo,
  and
  Uptime Kuma to new ranges
- Add Arrtrix content management commands and subscriptions
- Implement Radarr and Sonarr client logic for movie and series
  management
- Add matrix commands for download and subscription management
- Add subscription repository with database schema and logic
- Update Arrtrix config and example config for content section
- Update help text and command processor to include new commands
- Update vendor hash for Arrtrix package

modules/nixos/services/observability/loki/default.nix

@@ -17,7 +17,7 @@ in
         auth_enabled = false;
 
         server = {
-          http_listen_port = 9003;
+          http_listen_port = 9300;
         };
 
         common = {
@@ -44,6 +44,6 @@ in
       };
     };
 
-    networking.firewall.allowedTCPPorts = [ 9003 ];
+    networking.firewall.allowedTCPPorts = [ 9300 ];
   };
 }