add github push code to builder CI actions

.github/workflows/homebrew.yml

@@ -30,4 +30,19 @@ jobs:
           archivebox version
           archivebox status
 
+      # - name: Commit files
+      #   run: |
+      #     cd brew_dist/
+      #     git config --local user.email "action@github.com"
+      #     git config --local user.name "GitHub Action"
+      #     git commit -m "Homebrew package autobuild" -a
+      
+      # - name: Push changes
+      #   uses: ad-m/github-push-action@master
+      #   with:
+      #     github_token: ${{ secrets.GITHUB_TOKEN }}
+      #     repository: ArchiveBox/homebrew-archivebox
+      #     branch: ${{ github.ref }}
+      #     directory: brew_dist
+
       # TODO: push bottle to Github and open homebrew core PR with latest changes