Add UUID display to directory entries

[cmangeat]

Displaying subtemplate uuid in "manage directory" helps management:

• during xlink's xml edition,
• when looking for subtemplate in "manage diectory".

Checklist

• I have read the contribution guidelines
• Pull request provided for main branch, backports managed with label
• Good housekeeping of code, cleaning up comments, tests, and documentation
• Clean commit history broken into understandable chucks, avoiding big commits with hundreds of files, cautious of reformatting and whitespace changes
• Clean commit messages, longer verbose messages are encouraged
• API Changes are identified in commit messages
• Testing provided for features or enhancements using automatic tests
• User documentation provided for new features or enhancements in manual
• Build documentation provided for development instructions in README.md files
• Library management using pom.xml dependency management. Update build documentation with intended library use and library tutorials or documentation

[CLAassistant]

All committers have signed the CLA.

[cmangeat]

@OCurdy please, do you wish to open a pr yourself or is it ok so ?

(seems anyway that it clashes with cla and that pr need to be opened by the author...)

[OCurdy]

It seems ok now @cmangeat, I have signed the cla.

[sebr72]

Looks good. Thanks