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/MareSynchronosShared/Models/GroupBan.cs

@@ -1,10 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace MareSynchronosShared.Models;
+namespace MareSynchronosShared.Models;
 
 public class GroupBan
 {