Iso19115-3.2018, full view, linkage multilingual support

[cmangeat]

This PR adresses three requirements:

1. Iso19115-3.2018 linkages are multilingual elements, when displaying them,
   A sequence of more than one item is not allowed as the first argument of string() (<gco:CharacterString/>, <lan:PT_FreeText/>)
   error must be avoided.

2. Furthermore, based on ui's language, the correct url should be chosen.

3. At the end, many scenarios should be supported:
   there is a name and an url in xml -> in html, name carry the url (href),
   there is no name but a url -> in html, 'url text' carry the url,
   there is a name but no url -> a text is displayed with no href.

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

• Funded by geocat.ch

[cmangeat]

test control file could be impacted by #9123

[jahow]

Thank you! this change looks good.

[sebr72]

Great, Especially the test part of it.