feat: add ignoredKeys in settings

[francoismassart]

Better support for cva

Description

• Add a new setting ignoredKeys
• Add cva to the default list of callees
• Add tests for this new ignoredKeys setting

Fixes #193

Type of change

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

How Has This Been Tested?

Tests added in no-custom-classname

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

[its-monotype]

Works flawlessly even with tailwind-variants 👍 Can you please also add "tv" for tailwind-variants to the default list of callees?