Thesaurus / Date improvements.

[fxprunayre]

https://github.com/geonetwork/core-geonetwork/pull/6972/files#diff-c7548d94bdb4268915f50f66df5a90f1f7868e4fb1de2f3d2938397e202aaf2fR1057 added month and year format support. This was resolving thesaurus date to the last matching format ie. 1st January for the default date.

This can be tested using regions thesaurus which will contains 2 dates for the thesaurus block.

#6972 adds retrieval of dct:issued|modified|created dates but multiple dates could be added more than one time with same date type code. Improve the mapping (and add more flexibility to customize date type code).

@wangf1122, @ianwallen if you could review to check if the grouping of various dates match your requirements?

Misc:

• Cleanup namespace so that they are added to the top of the XML response.

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

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[fxprunayre]

Also I'm not sure what we should do if a thesaurus has no date defined?

[wangf1122]

@fxprunayre

I have cherry picked your commit to our system with HNAP schema. No impact. and looking good.