Add eslinter

Author: tvdijen

.github/workflows/eslinter.yml

@@ -20,12 +20,12 @@ jobs:
 
     steps:
       - name: Install NodeJS
-      - uses: actions/setup-node@v4
+        uses: actions/setup-node@v4
         with:
           node-version: latest
 
       - name: Install ESLint
-        run: npm ci
+        run: yarn add eslint --dev
 
       - name: Checkout Code
         uses: actions/checkout@v4