Add prettier github action

.github/workflows/prettier.yaml

@@ -0,0 +1,17 @@
+name: prettier
+on:
+  push:
+  pull_request:
+
+jobs:
+  prettier:
+    name: prettier
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+      - name: Prettify code
+        uses: creyD/[email protected]
+        with:
+          # This part is also where you can pass other options, for example:
+          prettier_options: --check contracts/FeralfileArtworkV4.sol