build: added github actions

Author: claudioaltamura

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Set up JDK 23
+        uses: actions/setup-java@v4
+        with:
+          java-version: 23
+          distribution: 'temurin'
+      - name: Build with Maven Wrapper
+        run: ./mvnw -B compile

README.md

@@ -1,3 +1,7 @@
+![GitHub Workflow Status (with branch)](https://img.shields.io/github/actions/workflow/status/claudioaltamura/java-java23/ci.yml?branch=main)
+
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+
 # java-java23
 Java 23 feature examples