feature: Filter improvements

[tmarcinkowski-logitech]

Description

• updateFilter function - exposed
• function to actually do the filtering - exposed (I needed to filter by the basename only)
• clicking on a folder in the search results view, opens it instead of toggling its state (implies the next change)
• all folders in the search results view are displayed as closed
• flattening of search results made optional

Changelog

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How Has This Been Tested?

• I actively use it in my codebase

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

[dreadera]

Thank you for the contribution :)
My only feedback is that the naming convention for files is kebab-case

So instead of defaultLogic.js It should be default-logic.js

[tmarcinkowski-logitech]

Great! I fixed the filename and added one more additional commit so please take a look at the whole again :)