chore: upgrade Maven wrapper in exported project from Camel Jbang

[apupier]

process used to update:

• delete content of maven-wrapper folder
• call mvn wrapper:wrapper -Dmaven=3.9.9 -Dtype=bin

updated code to copy from the generated structure instead of flattening it manually and that the code is unflatten it after.

Description

Target

• I checked that the commit is targeting the correct branch (note that Camel 3 uses camel-3.x, whereas Camel 4 uses the main branch)

Tracking

• If this is a large change, bug fix, or code improvement, I checked there is a JIRA issue filed for the change (usually before you start working on it).

Apache Camel coding standards and style

• I checked that each commit in the pull request has a meaningful subject line and body.

• I have run mvn clean install -DskipTests locally from root folder and I have committed all auto-generated changes.