Add GitHub workflow to run tests

.github/workflows/tests.yml

@@ -0,0 +1,20 @@
+name: Tests
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install OS dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install gobject-introspection libdbus-1-dev
+      - uses: getsentry/[email protected]
+        with:
+          python-version: '3.12'
+          install-cmd: pip install -r requirements.txt
+      - run: python -m unittest