alpine: many changes

- updates
- snapserver
- graphana dashboards
- loki
- ddclient
- arr suite, jellyseer
- mautrix fixes

nixos/services/prometheus.nix

@@ -34,4 +34,9 @@ in {
       };
     };
   };
+  services.grafana.provision.datasources.settings.datasources = [{
+    name = "Prometheus";
+    type = "prometheus";
+    url = "http://localhost:${toString prometheus.port}";
+  }];
 }