ci: add intial build and test workflow

Author: owenpearson

.github/workflows/test.yml

@@ -0,0 +1,31 @@
+name: Build and test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  check:
+    name: Build and test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20.x, 22.x, 24.x, 26.x]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - uses: actions/setup-node@v6
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: npm
+
+      - run: npm ci
+
+      - run: npm run format:check
+      - run: npm run lint
+      - run: npm run typecheck
+      - run: npm run check:error-codes
+      - run: npm test