Run unit tests using GitHub Actions on push/pull_request

Signed-off-by: Ryan Goulding <[email protected]>

.github/workflows/main.yaml

@@ -0,0 +1,21 @@
+name: unit tests
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18'
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Run unit tests
+        run: yarn test