CI: Create CI for contributors update

[why]
It's a pain to have the addition of contributors automated via
all-contributors bot, but then it does not end up on the webpage.

[how]
I'm not sure it will automatically be triggered (pretty sure it will
not), but at least one can clickstart manually the workflow.

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>

.github/workflows/contributors.yml

@@ -0,0 +1,40 @@
+name: Update contributors
+
+on:
+  push:
+     branches: [ master ]
+     paths:
+       - CONTRIBUTORS.md
+       - bin/scripts/update-all-contributors-website.py
+
+  workflow_dispatch:
+
+jobs:
+  create-casks:
+    name: Update gh-pages contributors
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fetch from master
+        uses: Bhacaz/checkout-files@v2
+        with:
+          files: CONTRIBUTORS.md bin/scripts/update-all-contributors-website.py
+          branch: master
+      - name: Fetch from gh-pages
+        uses: Bhacaz/checkout-files@v2
+        with:
+          files: _posts/2017-01-05-all-contributors.md
+          branch: gh-pages
+      - name: Update the page
+        run: |
+          cd bin/scripts
+          chmod u+x *
+          ./update-all-contributors-website.py
+      - name: Deploy page to gh-pages
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          folder: _posts
+          target-folder: _posts
+          commit-message: "[ci] Regenerate contributors"
+          git-config-name: GitHub Actions
+          git-config-email: 41898282+github-actions[bot]@users.noreply.github.com
+          clean: false

bin/scripts/README.md

@@ -27,7 +27,7 @@ Note: Usually you need to call the scripts in this directory while actually bein
 * `test-fonts.sh`: Print-to-debug all glyphs we patch in [4]
 * `test-powerlines.sh`: Print-to-debug powerline examples [4]
 * `tests.sh`: Create some font usage gif movie? [x]
-* `update-all-contributors-website.py`: Update the contributors page on `nerdfonts.com` (i.e. gh-pages) (Hardcoded paths!) [3]
+* `update-all-contributors-website.py`: Update the contributors page on `nerdfonts.com` (i.e. gh-pages) [7]
 * `version-bump.sh`: Change version number in all scripts on a new release [1]
 
 [1] Used by CI (github release workflow)
@@ -36,4 +36,5 @@ Note: Usually you need to call the scripts in this directory while actually bein
 [4] To be used manually
 [5] Used by CI (github packsvgs workflow)
 [6] Used by CI (github casks workflow)
+[7] Used by CI (github contributors workflow)
 [x] Probably not used by anything