Add workflow for linting (#18)

.github/workflows/lint.yml

@@ -0,0 +1,22 @@
+name: Linting
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-node@v3
+      with:
+          node-version: '20'
+    - name: Run Linter
+      run: |
+        npm install
+        npm run lint