feat: add test-files-glob input

[Ondrej Klinovsky (oklinov)]

• this allows us to use glob to specify what tests we want to run
• this should be backward compatible

example from google-maps:

jobs:
    platformTestsCore:
        uses: apify-store/github-actions-source/.github/workflows/platform-tests.yaml@master
        with:
            test-files-glob: "*.hourly.test.ts"
        secrets: inherit