Modified to have the same style as the default GitHub webhook.
This is mainly for my own personal use! There will be little to no support provided.

1. In Github secrets, add a WEBHOOK_URL variable with the Discord web hook URL.

2. Inside your workflow file, add this snippet after the build-critical task:

       - name: Send Webhook Notification
         if: always()
         run: |
           git clone https://github.com/Encode42/discord-workflows-webhook.git webhook
           bash webhook/send.sh ${{ job.status }} ${{ secrets.WEBHOOK_URL }}
         shell: bash

   _{To see a working example, look at this workflow file.}

3. That's all! Webhook notifications will automatically be sent on every workflow run.