add prettier to github workflows

- rename test workflow to `validate_datapack`
- change test workflow to only run on commits on PRs and commits that are pushed to main

.github/workflows/validate.yml → .github/workflows/validate_datapack.yml

@@ -1,6 +1,10 @@
-name: validate
+name: validate_datapack
 
-on: [push, workflow_dispatch]
+on:
+  pull_request:
+  push:
+    branches:
+      - main
 
 # TODO(37): add linting
 jobs:

.github/workflows/validate_scripts.yml

@@ -0,0 +1,20 @@
+name: validate_scripts
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  prettier:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Prettify code
+        uses: creyD/prettier_action@v4.3
+        with:
+          dry: True
+          prettier_options: '--check .'
+          prettier_version: 3.1.1

.prettierignore

@@ -0,0 +1,3 @@
+# Ignore datapack/resourcepack
+datapacks
+resourcepack