Aj changes

[AaronJhaj]

• Adopted new best-practice project structure with Eclipse builds and CICS bundle projects.
• Restructured into a multi-module Maven/Gradle reactor build for cleaner separation of app and bundle.
• Enhanced GitHub Actions workflow:
  • Updated copyright check.
  • Upgraded Gradle action to v4.
• Expanded .gitignore to exclude build artifacts, IDE metadata, and temp outputs.
• Improved Eclipse compatibility via .project, .classpath, and .settings updates.
• Updated README: clarified project structure, corrected paths, updated build and deploy methods and added license and usage terms

[IvanHargreaves]

Just one thing I noticed in passing (see comment) which might be correct, but I thought I better double check.