Added settings option model. Recreated migrations

Moonlight.Api/Database/Entities/SettingsOption.cs

@@ -0,0 +1,14 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Moonlight.Api.Database.Entities;
+
+public class SettingsOption
+{
+    public int Id { get; set; }
+
+    [MaxLength(256)]
+    public required string Key { get; set; }
+    
+    [MaxLength(4096)]
+    public required string Value { get; set; }
+}