Some orgnization, and cleanup to come.

RelayServer/Models/Crypto/ClientPublicKeys.cs

@@ -0,0 +1,11 @@
+using SurrealDb.Net.Models;
+
+namespace RelayServer.Models;
+
+public class ClientPublicKeys : Record
+{
+    public required string Username { get; set; }
+    public required string PublicKey { get; set; }
+    public required DateTime CreatedAt { get; set; }
+    public required DateTime UpdatedAt { get; set; }
+}