making ice candidates write to DB properly

RelayServer/Models/Rtc/RtcIceCandidate.cs

@@ -9,6 +9,22 @@ public class RtcIceCandidate : Record
     public required string Candidate { get; set; }
     public string? SdpMid { get; set; }
     public int? SdpMLineIndex { get; set; }
-    public required string Direction { get; set; } // "offer" or "answer"
+    // public required string Direction { get; set; } // "offer" or "answer"
     public DateTime CreatedAt { get; set; }
+}
+
+public class DBIceCandidate
+{
+    public required string ChannelId { get; set; }
+    public required string Username { get; set; }
+    public required IceCandidate Candidate { get; set; }
+}
+
+public class IceCandidate
+{
+    public required string candidate { get; set; }
+    public required string sdpMid { get; set; }
+    public required int sdpMLineIndex { get; set; }
+    public required string usernameFragment { get; set; }
+    
 }