Add workflows

.github/workflows/mirror.yaml

@@ -0,0 +1,46 @@
+name: Mirror from declaratia
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  workflow_dispatch:
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - uses: actions/checkout@v3
+        with:
+          repository: newren/git-filter-repo
+          path: git-filter-repo
+
+      - uses: actions/checkout@v3
+        with:
+          repository: merrkry/declaratia
+          fetch-depth: 0
+          path: declaratia
+
+      - uses: actions/checkout@v3
+        with:
+          repository: merrkry/decalratia
+          fetch-depth: 0
+          path: decalratia
+
+      - run: |
+          python git-filter-repo/git-filter-repo --path flake.lock --invert-paths --force
+
+      - run: |
+          rm -r declaratia/.github/workflows
+          cp -r decalratia/.github/workflows declaratia/.github/workflows
+          git add declaratia/.github/workflows
+          git commit -m "Override workflows"
+
+      - run: |
+          cd declaratia
+          git remote add public https://github.com/merrkry/decalratia.git
+          git push public master --force