The missing action for Gitea

• Works on Linux, Mac, and Windows
• Supports different versions

ref: https://docs.gitea.io/en-us/environment-variables/

    steps:
    - uses: actions/checkout@v2
    - uses: laojianzi/setup-gitea@v1
      with:
        gitea-version: latest
        args: --version

version of gitea to use in form of v1.2 or v1.2.3 or latest to use the latest version

gitea command line arguments