Add ci workflow

This is a direct copy from repository playground (so will need some changes to work).

.github/workflows/ci.yml

@@ -0,0 +1,38 @@
+name: Lint & test
+
+on:
+  push:
+  pull_request:
+
+permissions: {}
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
+
+    - uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435
+      with:
+        python-version: "3.11"
+        cache: 'pip'
+
+    - name: Install system dependencies for e2e test
+      run: |
+        sudo apt-get install libfaketime softhsm2
+        echo "PYKCS11LIB=/usr/lib/softhsm/libsofthsm2.so" >> $GITHUB_ENV
+
+    - name: Install tox
+      run: python -m pip install tox
+
+    - name: Lint
+      working-directory: playground
+      run: tox -m lint
+
+    - name: Repository unit tests
+      working-directory: playground
+      run: tox -e test-repo
+
+    - name: End-to-end tests
+      working-directory: playground
+      run: tox -e test-e2e