feat: improved filters in GUI

[lars-reimann]

Closes #487.

Summary of Changes

• Replace setting "Show private declarations" with visibility filter
• Replace class:xy etc. filter with separate filters is:class and name:xy
• New filter: annotation:any
• New filter: annotation:@xy
• Negated filters
• Display truly matching elements in bold (other elements in their hierarchy are still shown)
• Update help text (popover to the right of the filter text box)
• Bug: First parameter cannot be annotated during filtering even though it's not actually the first parameter
• Unit tests for filters
• Code documentation for filters

Screenshots (if necessary)

Testing Instructions

1. Open a terminal in the root of the repository folder
2. Run this command

cd api-editor/gui
npm run dev

3. Open localhost:3000 in the browser (if the port is taken it might be different, check the output of the previous command in your terminal)
4. Open the help dialog next to the filter box (top right corner)
5. Try different combinations of the filters listed there and observe the changes to the tree view.

[lars-reimann]

@Masara @DavidTen1 Please use this as the basis going forward. It seems to roughly work as expected now but should be verified by unit tests before the PR is merged.

[github-actions]

MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ CREDENTIALS	secretlint	yes		no	3.85s
✅ GIT	git_diff	yes		no	0.01s
✅ TYPESCRIPT	prettier	29	0	0	2.85s

See errors details in artifact MegaLinter reports on CI Job page
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

[jofaul]

LGTM - lots of code with no tests, but since this is the webapp where bugs are either obvious or impossible to find it should be fine.