[Feature request] Autofix css vars to simpler syntax

[sbdchd]

Is your feature request related to a problem? Please describe.

convert

<Foo className="text-[var(--color-text)]" />

into:

<Foo className="text-[--color-text]" />

Describe the solution you'd like
Autofix all occurrences of the more verbose css var syntax

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.