Setup gh-xz

GitHub Actions for setting up gh extension gh-xz.

Notes

In GitHub Actions, gh extension install cannot be executed (due to the restricted GITHUB_TOKEN, git clone fails with 404).
So, clone with actions/checkout and then move to the gh extension directory.
ref: cli/cli#6988

Example

name: example

on:
  pull_request:

jobs:
  example:
    if: github.actor != 'dependabot[bot]' && github.actor != 'renovate[bot]'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
    steps:
      - uses: hakadoriya-actions/[email protected]
      - name: Run gh xz
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        shell: bash
        run: |
          gh xz put-anchored-comment ${{ github.repository }} ${{ github.event.number }} anchor1 "This anchored comment is posted by gh-xz."