Support Ant style globs

[walshta]

It would be nice if specifying asset paths using asset_path could support Ant style globs such as ./build/**/*.zip. Build systems like Maven and Gradle have sometimes complex or long paths and this would simplify setting up the task.

This also affects issue #4.

[eine]

Ref https://github.com/actions/upload-artifact/issues/3#issuecomment-524442814

[derTobsch]

This is for me the must have feature, otherwise I cannot use this action, because the war/jar the we are building is named urlaubsverwaltung-$(version).war and therefore we need a urlaubsverwaltung-*