Add Gitea workflow

.gitea/workflows/update.yaml

@@ -0,0 +1,31 @@
+name: automatically check for updates
+
+on:
+  push:
+  schedule:
+    - cron: "0 4 * * 6"
+
+jobs:
+  Check_for_update:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+      - name: update argonfanhat
+        run: |
+          wget https://download.argon40.com/argonfanhat.sh
+          rm -f argonfanhat.sh.*
+          wget https://download.argon40.com/ar1config.png
+          rm -f ar1config.png.*
+          wget http://download.argon40.com/ar1uninstall.png
+          rm -f ar1uninstall.png.*
+      - name: git commit
+        run: |
+          git config user.name "${{ secrets.GIT_USERNAME }}"
+          git config user.email "${{ secrets.GIT_USEREMAIL }}"
+          mtime=$(stat -c "%y" ./argonfanhat.sh)
+          git add .
+          export GIT_COMMITTER_DATE=$mtime
+          export GIT_AUTHOR_DATE=$mtime
+          version=$(date -d "${mtime}" +%Y-%m-%d)
+          if [ -n "$(git diff --staged)" ]; then git commit --date "$mtime" -m "update $version" && git push; fi