CICD: Add mirroring

.github/workflows/mirror.yml

@@ -0,0 +1,24 @@
+name: Publish
+
+on: [push, pull_request]
+
+env:
+  MIRROR_URL: [email protected]:EpitechPromo2026/B-CPP-500-TLS-5-1-rtype-xavier.mitault.git
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    if: ${{ github.event_name == 'push' }}
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - uses: pixta-dev/repository-mirroring-action@v1
+      if: github.repository != 'EpitechPromo2026/B-CPP-500-TLS-5-1-rtype-xavier.mitault.git'
+      with:
+        target_repo_url:
+          ${{ env.MIRROR_URL }}
+        ssh_private_key:
+          ${{ secrets.SSH_KEY }}