added CI workflow

.gitea/workflows/ci.yaml

@@ -0,0 +1,33 @@
+name: CI
+on:
+  push:
+    branches: [ main, dev ]
+  pull_request:
+    branches: [ main, dev ]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    container: catthehacker/ubuntu:act-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install tytanic
+        uses: taiki-e/cache-cargo-install-action@v2
+        with:
+          tool: tytanic@0.2.2
+
+      - name: Run test suite
+        run: tt run
+
+      - name: Archive artifacts
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: artifacts
+          path: |
+            tests/**/diff/*.png
+            tests/**/out/*.png
+            tests/**/ref/*.png
+          retention-days: 5