Migrate Jenkins PR builder to GitHub Action [DI-336] (#674)

This came about at the back of removing Code Samples from Platform
releases https://hazelcast.atlassian.net/browse/DI-313

Fixes: https://hazelcast.atlassian.net/browse/DI-336

---------

Co-authored-by: Jack Green <[email protected]>

Author: nishaatr

.github/workflows/builder.yaml

@@ -0,0 +1,26 @@
+name: Builder
+
+on:
+  pull_request_target:
+
+jobs:
+  pr-builder:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+      - name: Set up Java
+        uses: actions/setup-java@v4
+        with:
+          java-version: 17
+          distribution: temurin
+      - name: Build and test
+        run: |
+          set ${RUNNER_DEBUG:+-x}
+          mvn \
+            --batch-mode \
+            --errors \
+            --no-transfer-progress \
+            ${RUNNER_DEBUG:+--show-version} \
+            "-Dhazelcast.enterprise.license.key=${{ secrets.HAZELCAST_ENTERPRISE_KEY_V7 }}" \
+           package