Add more Windows Store app package types (#2995)

Visual Studio can also generate .appxbundle and .appxupload files for Windows Store apps.
See: https://docs.microsoft.com/en-us/windows/uwp/packaging/packaging-uwp-apps#types-of-app-packages

Author: nphmuller

VisualStudio.gitignore

@@ -209,6 +209,8 @@ BundleArtifacts/
 Package.StoreAssociation.xml
 _pkginfo.txt
 *.appx
+*.appxbundle
+*.appxupload
 
 # Visual Studio cache files
 # files ending in .cache can be ignored