add codeberg mirroring

Author: halfcyan

.github/workflows/mirror.yml

@@ -0,0 +1,16 @@
+name: mirror
+
+on: [push]
+
+jobs:
+  mirror:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: yesolutions/mirror-action@master
+        with:
+          REMOTE: "https://codeberg.org/FyraStack/61Craft-stack.git"
+          GIT_USERNAME: ${{ secrets.GIT_USERNAME }}
+          GIT_PASSWORD: ${{ secrets.GIT_PASSWORD }}