.github/workflows: Run unit tests on Ubuntu 22.04

.github/workflows/ubuntu-tests.yaml

@@ -0,0 +1,25 @@
+name: unit-test-ubuntu
+
+on:
+  pull_request:
+    branches:
+      - main
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  unit-test-ubuntu-22.04:
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Download Go modules
+        run: go mod download -x
+        working-directory: src
+
+      - name: Set up build directory
+        run: meson setup --fatal-meson-warnings builddir