Added Kotlin package root selection

[oleg68]

Summary

• added a New → Kotlin Package wizard and template
• offered Source Packages, Test Packages, Kotlin Source Packages, and Kotlin Test Packages as package targets
• created dotted package paths below only the selected root, with coverage for registration, root selection, and folder creation

Verification

• mvn test -pl Nbm -am -Dtest=KtPackageWizardIteratorTest -Dsurefire.failIfNoSpecifiedTests=false
• mvn clean test
• python3 build-scripts/update-copyright.py --check
• mvn package -DskipTests
• manually verified in NetBeans

🤖 Generated with Claude Code