Updated Structure, and fixed paths.

- Project does not work still in this version as communication is still not happening between Client/Server/Core. Fake UI is still somewhat needed to progress

RelayCore/Models/PasswordHasher.cs

@@ -1,9 +1,8 @@
-using System;
-using System.Security.Cryptography;
+using System.Security.Cryptography;
 using System.Text;
 using Konscious.Security.Cryptography;
 
-namespace PasswordHasher
+namespace RelayCore.Models
 {
     /// <summary>
     /// Provides secure password hashing functionality using Argon2id algorithm