[CI] Add CI for PRs

.github/workflows/ci-pr.yml

@@ -0,0 +1,32 @@
+name: CI PRs
+
+on:
+  pull_request:
+    branches:
+      - 'main'
+    paths-ignore:
+      - '.github/**'
+
+jobs:
+  build_and_verify:
+    name: Build and Verify
+    if: github.repository == 'spring-projects-experimental/spring-grpc'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          cache: maven
+      - name: Build and test
+        run: |
+          ./mvnw -B clean install
+      - name: Capture Test Results
+        if: failure()
+        uses: actions/upload-artifact@v3
+        with:
+          name: test-results
+          path: '*/target/surefire-reports/*.*'
+          retention-days: 3