add group moderation and banning functionality to api (#13)

* add group moderation and banning functionality to api

* set moderator to false on group migration

* send IsModerator in addition on group join

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

MareSynchronosServer/MareSynchronosShared/Models/GroupBan.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MareSynchronosShared.Models;
+
+public class GroupBan
+{
+    public Group Group { get; set; }
+    public string GroupGID { get; set; }
+    public User BannedUser { get; set; }
+    public string BannedUserUID { get; set; }
+    public User BannedBy { get; set; }
+    public string BannedByUID { get; set; }
+    public DateTime BannedOn { get; set; }
+    public string BannedReason { get; set; }
+}

MareSynchronosServer/MareSynchronosShared/Models/GroupPair.cs

@@ -8,4 +8,5 @@ public class GroupPair
     public User GroupUser { get; set; }
     public bool IsPaused { get; set; }
     public bool IsPinned { get; set; }
+    public bool IsModerator { get; set; }
 }