feat: Add GitHub Actions workflow for license checking (#936)

Author: JamieSinn

.github/workflows/licenses.yml

@@ -0,0 +1,15 @@
+on:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  license-check:
+    name: License Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DevCycleHQ/license-action@main
+        with:
+          language: "javascript"