Add a nugetPath parameter during command line build

Author: MaxWang-MS

Assets/MRTK/Core/Utilities/BuildAndDeploy/UwpPlayerBuildTools.cs

@@ -38,6 +38,9 @@ private static void ParseBuildCommandLine(ref UwpBuildInfo buildInfo)
                         // Note: the min sdk target cannot be changed.
                         EditorUserBuildSettings.wsaUWPSDK = arguments[++i];
                         break;
+                    case "-nugetPath":
+                        buildInfo.NugetExecutablePath = arguments[++i];
+                        break;
                 }
             }
         }