Restructured projects and created Services for permissions and users

HopFrame.Api/Models/UserPasswordValidation.cs

@@ -0,0 +1,5 @@
+namespace HopFrame.Api.Models;
+
+public class UserPasswordValidation {
+    public string Password { get; set; }
+}

HopFrame.Api/Models/UserRegister.cs

@@ -1,7 +0,0 @@
-namespace HopFrame.Api.Models;
-
-public struct UserRegister {
-    public string Username { get; set; }
-    public string Email { get; set; }
-    public string Password { get; set; }
-}