Misc bunch of changes (#2815)

API/Entities/AppUser.cs

@@ -63,6 +63,15 @@ public class AppUser : IdentityUser<int>, IHasConcurrencyToken
     /// <remarks>Requires Kavita+ Subscription</remarks>
     public string? AniListAccessToken { get; set; }
 
+    /// <summary>
+    /// The Username of the MAL user
+    /// </summary>
+    public string? MalUserName { get; set; }
+    /// <summary>
+    /// The Client ID for the user's MAL account. User should create a client on MAL for this.
+    /// </summary>
+    public string? MalAccessToken { get; set; }
+
     /// <summary>
     /// A list of Series the user doesn't want scrobbling for
     /// </summary>