Have UI expose data in VariablePresentationHint

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. --> Hi all! Besides wanting this myself, I get user requests here and there (https://github.com/xdebug/vscode-php-debug/issues/819) to provide visual feedback on whether a field displayed in the Variables pane is private, protected or public. This is all reported within VariablePresentationHint with lots more information. I understand from this old issue #50331 that VS Code doesn't implement this and that adding support similar to VS would be quite an effort (a lot of icon combinations) however how about a simpler approach? Currently when hovering on a variable name, we get the `type` name:  Could we just add the other info, if its present? Maybe `(visibility _attributes_ kind) type` Maybe we can call on some of the other DA authors and maintainers to see if they are receiving similar feedback? Thanks again for all the hard work! Damjan