Add Maven Wrapper for controlled Maven version builds

[GaneshPatil7517]

Added Maven Wrapper to lock Maven version to 3.9.6 across all environments.
No need to install Maven manually anymore - the wrapper downloads it automatically.
Works on Linux, macOS, and Windows without any extra setup.
Updated README with usage instructions for ./mvnw and mvnw.cmd.
This ensures consistent builds regardless of what's installed on dev machines or CI.

Fixes #1051

[davsclaus]

Thanks, can you use the latest release 3.9.12

wrapperVersion=3.3.4
distributionType=bin
distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.12/apache-maven-3.9.12-bin.zip
wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.3.4/maven-wrapper-3.3.4.jar

[GaneshPatil7517]

hey @davsclaus i updated Maven cheack now.....

[github-actions]

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[GaneshPatil7517]

Hey @davsclaus and @oscerd 👋
The PR checks have passed successfully without any issues.

Really excited for this to get merged looking forward to your review and feedback!
Thanks for your time and support

[GaneshPatil7517]

@davsclaus thank you so much..