Enable nullable for more files

MediaBrowser.Model/Configuration/MediaPathInfo.cs

@@ -1,12 +1,16 @@
-#nullable disable
 #pragma warning disable CS1591
 
 namespace MediaBrowser.Model.Configuration
 {
     public class MediaPathInfo
     {
+        public MediaPathInfo(string path)
+        {
+            Path = path;
+        }
+
         public string Path { get; set; }
 
-        public string NetworkPath { get; set; }
+        public string? NetworkPath { get; set; }
     }
 }