Update: Added RelayServer Logic

RelayServer/Models/ChannelMessages.cs

@@ -0,0 +1,13 @@
+using SurrealDb.Net.Models;
+
+namespace RelayServer.Models;
+
+public class ChannelMessages : Record
+{
+    public required string ChannelId { get; set; }
+    public required string SenderUserId { get; set; }
+    public required string CipherText { get; set; }
+    public required string Nonce { get; set; }
+    public required string Tag { get; set; }
+    public required DateTime CreatedAt { get; set; }
+}