ci: Add workflow_dispatch trigger

https://docs.github.com/en/actions/managing-workflow-runs-and-deployments/managing-workflow-runs/manually-running-a-workflow

Author: auscompgeek

.github/workflows/dist.yml

@@ -8,6 +8,7 @@ on:
     - main
     tags:
     - '*'
+  workflow_dispatch:
 
 concurrency:
   group: ${{ github.ref }}