No keep_files option

[FLAK-ZOSO]

I think it would be cool if there was a configuration option such as this one.

• https://github.com/peaceiris/actions-gh-pages?tab=readme-ov-file#%EF%B8%8F-keeping-existing-files-keep_files

Something like...

jobs:
  deploy:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: DenverCoder1/doxygen-github-pages-action@v2.0.0
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          keep_files: true # So I will not remove all other files on the branch

It is useful because for example in a repository of mine I deploy both Doxygen documentation and PyDoc documentation to different URLs on the same GitHub Pages website, and I don't want one to overwrite the other.