feat: add twMerge to default callees

[DaniAkash]

Pull Request Name

Description

Adds tailwind-merge to the list of default callees in the package's rules

Fixes #252

Type of change

Please delete options that are not relevant.

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

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.
Please also list any relevant details for your test configuration

• Test A
• Test B

Test Configuration:

• OS + version: e.g. macOS Mojave
• NPM version: ...
• Node version: ...

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
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings