Switch Authentication to asynchronous streaming calls (#16)

* add base grpc service and swap auth service to streaming

* remove Authorize from hub itself

* remove unused usings

* heave files server to net 7, add exception handling in grpc auth stream

Co-authored-by: rootdarkarchon <root.darkarchon@outlook.com>

MareSynchronosServer/MareSynchronosServices/CleanupService.cs

@@ -16,7 +16,7 @@ using System.Threading.Tasks;
 
 namespace MareSynchronosServices;
 
-public class CleanupService : IHostedService, IDisposable
+internal class CleanupService : IHostedService, IDisposable
 {
     private readonly MareMetrics metrics;
     private readonly SecretKeyAuthenticationHandler _authService;