[AspNetCore] Update ASP.NET Core file nesting rules

Fixes https://devdiv.visualstudio.com/DevDiv/_workitems/edit/938197

Author: Rodrigo Moya

main/src/addins/MonoDevelop.AspNetCore/MonoDevelop.AspNetCore.Tests/MonoDevelop.AspNetCore.Tests/AspNetCoreProjectTests.cs

@@ -84,6 +84,7 @@ public async Task AspNetCore_FileNesting ()
 				files.Add (("template.cs", "template.tt"));
 				files.Add (("template.doc", "template.tt"));
 				files.Add ((".bowerrc", "bower.json"));
+				files.Add (("package-lock.json", "package.json"));
 
 				var project = sol.GetAllProjectsWithFlavor<AspNetCoreProjectExtension> ().FirstOrDefault ();
 

main/src/addins/MonoDevelop.AspNetCore/Resources/AspNetCore.filenesting.json

@@ -84,6 +84,9 @@
           ],
           ".yarnrc": [
             "package.json"
+          ],
+          "package-lock.json": [
+            "package.json"
           ]
         }
       },