Indentification info locale and iso19139 to iso19115-3 conversion

[cmangeat]

When converting iso19139 to iso19115-3, identification info's locales should be allocated into default locale and other locale.

Indexation should take other locale into account.

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

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• API Changes are identified in commit messages

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• 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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