feat: setup repository as GitHub Action

[qoomon]

This PR will add a GitHub Action meta file to simplify usage of my badges in GitHub Actions workflows. e.g.

permissions: 
  contents: write
jobs:
  generate-badges:
    runs-on: ubuntu-latest
    steps:
       - uses: my-badges/my-badges@master

[antonmedv]

Please reformat yaml files with prettier.

[qoomon]

Done