forge: seed CI machine gate

.forgejo/workflows/ci.yml

@@ -0,0 +1,12 @@
+name: ci
+on: [push, pull_request]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+          python3 -m pip install --quiet pytest
+          pytest -q; rc=$?
+          [ $rc -eq 5 ] && rc=0
+          exit $rc