Here's the rewritten message:

ci: Add GitHub Actions workflow for Maven build

I've added a GitHub Actions workflow to automatically build and test your project using Maven on pushes and pull requests to the main/master branches.

The workflow is defined in `.github/workflows/maven-ci.yml` and includes:
- Checking out your code.
- Setting up JDK 17 (Temurin).
- Caching Maven dependencies.
- Running `mvn -B package --file pom.xml` to build and test.

I've also added a build status badge to your `README.md`.

Author: google-labs-jules[bot]

.github/workflows/maven-ci.yml

@@ -0,0 +1,22 @@
+name: Java CI with Maven
+
+on:
+  push:
+    branches: [ "main", "master" ] # Adjust if your main branch has a different name
+  pull_request:
+    branches: [ "main", "master" ] # Adjust if your main branch has a different name
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+        cache: maven
+    - name: Build with Maven
+      run: mvn -B package --file pom.xml # -B batch mode, package runs tests

README.md

@@ -1,5 +1,7 @@
 # QR-code Generator and Reader
 
+[![Java CI with Maven](https://github.com/thecoder8890/spring-boot-qr-code-generator-reader-api/actions/workflows/maven-ci.yml/badge.svg)](https://github.com/thecoder8890/spring-boot-qr-code-generator-reader-api/actions/workflows/maven-ci.yml)
+
 ## Application used [Java 17](https://onurdesk.com/what-are-preview-features-in-java-17/) and Spring Boot 3.5.0 | [Onurdesk](https://onurdesk.com/)
 
 ###### Spring boot application exposing REST API endpoint to genrate QR-code representing custom message and another endpoint to read the decoded message, built using Java, [Spring Boot 3.5.0](https://spring.io/projects/spring-boot/) and [google's zxing library](https://opensource.google/projects/zxing).