Discord webhook action

- name: Send status to Discord
  uses: mangadventure/discord-webhook@v0.1
  if: always()
  with:
    webhook-url: ${{secrets.WEBHOOK_URL}} # required
    lang-name: Python # optional, default: Bash
    lang-version: 3.9 # optional, default: $BASH_VERSION
    run-suffix: "-1" # optional, default: ""