feat(update): update the backend like nodes via quadlet restart [CI]

backend/src/MoShiro.Backend/BackendHost.cs

@@ -48,6 +48,7 @@ public static class BackendHost
             services.AddSingleton<IGeoLookup>(new HttpGeoLookup(options.GeoLookupUrl));
         }
 
+        services.AddSingleton<IBackendRestart, HostBackendRestart>();
         services.AddMoShiroApplication(options);
         services.AddMoShiroGateway();
         services.AddMoShiroApi();