chore: Add workflow to build with -Prelease (#405)

Author: kabir

.github/workflows/build-with-release-profile.yml

@@ -0,0 +1,61 @@
+name: Build with '-Prelease'
+
+# Simply runs the build with -Prelease to avoid nasty surprises when running the release-to-maven-central workflow.
+
+
+on:
+  # Handle all branches for now
+  push:
+  pull_request:
+  workflow_dispatch:
+
+# Only run the latest job
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
+jobs:
+  build:
+    # Only run this job for the main repository, not for forks
+    if: github.repository == 'a2aproject/a2a-java'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          cache: maven
+
+      # Use secrets to import GPG key
+      - name: Import GPG key
+        uses: crazy-max/ghaction-import-gpg@v6
+        with:
+          gpg_private_key: ${{ secrets.GPG_SIGNING_KEY }}
+          passphrase: ${{ secrets.GPG_SIGNING_PASSPHRASE }}
+
+      # Create settings.xml for Maven since it needs the 'central-a2asdk-temp' server.
+      # Populate wqith username and password from secrets
+      - name: Create settings.xml
+        run: |
+          mkdir -p ~/.m2
+          echo "<settings><servers><server><id>central-a2asdk-temp</id><username>${{ secrets.CENTRAL_TOKEN_USERNAME }}</username><password>${{ secrets.CENTRAL_TOKEN_PASSWORD }}</password></server></servers></settings>" > ~/.m2/settings.xml
+
+      # Deploy to Maven Central
+      # -s uses the settings file we created.
+      - name: Build with same arguments as deploy job
+        run: >
+          mvn -B install
+          -s ~/.m2/settings.xml
+          -P release
+          -DskipTests
+          -Drelease.auto.publish=true
+        env:
+          # GPG passphrase is set as an environment variable for the gpg plugin to use
+          GPG_PASSPHRASE: ${{ secrets.GPG_SIGNING_PASSPHRASE }}