Add prettier to linter file

web/.github/workflows/linter.yml

@@ -20,3 +20,24 @@ jobs:
           config-path: '.eslintrc.js'
           ignore-path: '.eslintignore'
           extensions: 'ts,tsx,js,jsx'
+
+  prettier:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        # Make sure the actual branch is checked out when running on pull requests
+        ref: ${{ github.head_ref }}
+        fetch-depth: 0
+
+    - name: Prettify code
+      uses: creyD/prettier_action@v3.1
+      with:
+        # This part is also where you can pass other options, for example:
+        prettier_options: --write **/*.{js,tsx,jsx,css,scss}
+        only_changed: true
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+