chore(ci): add gradle wrapper validation

Author: simschla

.github/workflows/gradle-wrapper-validation.yml

@@ -0,0 +1,22 @@
+name: "Validate Gradle Wrapper"
+
+on:
+  workflow_dispatch: null
+  push:
+    paths:
+      - "gradlew"
+      - "gradlew.bat"
+      - "gradle/wrapper/"
+  pull_request:
+    paths:
+      - "gradlew"
+      - "gradlew.bat"
+      - "gradle/wrapper/"
+
+jobs:
+  validation:
+    name: "Validation"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: gradle/actions/wrapper-validation@v4