Add eslint as linter and add linter workflow

.github/workflows/lint.yml

@@ -0,0 +1,22 @@
+name: Lint Codebase
+
+on: [push]
+
+jobs:
+  eslint:
+    runs-on: node
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 'latest'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run ESLint
+        run: npm run lint