Add github actions

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

@@ -0,0 +1,12 @@
+name: "Validate Gradle Wrapper"
+on: [push, pull_request]
+
+jobs:
+    validation:
+        name: "Validation"
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v3
+              name: Checkout repository
+            - uses: gradle/wrapper-validation-action@v1
+              name: Validate wrappers