[CI] add woodpecker config for use on code.c-base.org

.woodpecker/workflow.yaml

@@ -0,0 +1,20 @@
+when:
+  - event: push
+    branch: main
+
+steps:
+  - name: lint
+    image: pipelinecomponents/ruff
+    commands:
+      - ruff check .
+
+  - name: test
+    image: python:3.13-slim
+    environment:
+      DJANGO_SETTINGS_MODULE: config.settings
+      DEPLOYMENT: Test
+    commands:
+      - python -m venv venv
+      - /bin/bash -c "source venv/bin/activate"
+      - python -m pip install --disable-pip-version-check -r requirements/test.txt
+      - python -m pytest