Feature(Auth): Add Login and Refresh Token

RT.Domain/Entities/RefreshToken.cs

@@ -0,0 +1,10 @@
+namespace RT.Domain.Entities;
+
+public class RefreshToken
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public string UserId { get; set; } = null!;
+    public string Token { get; set; } = null!;
+    public DateTime ExpiresAt { get; set; }
+    public bool IsRevoked { get; set; }
+}