Possibly fix issues

After doing testing with a test project, re-organized code to new method
of storing, as well as ensure that all Endpoint lambda's are separated
out into functions.

Large commit, will be testing.

FreeTubeSync/Model/Profile.cs

@@ -0,0 +1,13 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace FreeTubeSync.Model;
+
+public class Profile
+{
+    [Key]
+    public string _id { get; set; } = string.Empty;
+    public string name { get; set; } = string.Empty;
+    public string bgColor { get; set; } = string.Empty;
+    public string textColor { get; set; } = string.Empty;
+    public List<Subscription> subscriptions { get; set; } = [];
+}