Add CI workflow

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: SDK build and test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20.x
+          cache: "npm"
+          cache-dependency-path: "package-lock.json"
+      - name: "Install deps"
+        run: npm ci
+      - name: "Build"
+        run: npm run build:dist
+      -name: "Test"
+        run: npm t