fix: set nativewind's rem size to 16

[asdolo]

Notion board reference:

• Update nativewind config

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What does this do?

This PR updates NativeWind's rem size from 14 (default) to 16. It also moves the font object from the tailwind config file to a separate file, like we have with the colors.

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Why did you do this?

To match the standard web sizing (1rem = 16px) and align with Figma’s 4px-based design grid, making it easier to work with consistent multiples.

Who/what does this impact?

Developers creating UIs using NativeWind.

How did you test this?

N/A

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Notes:

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Screenshots / Previews

N/A

[github-actions]

💯 Test Coverage

Lines	Statements	Branches	Functions
	49.78% (342/687)	44.36% (122/275)	36.28% (86/237)

😎 Tests Results

Tests	Skipped	Failures	Errors	Time
77	0 💤	0 ❌	0 🔥	29.75s ⏱️

👀 Tests Details • (50%)

File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
All files	49.78	44.36	36.28	50.15
components/ui	77.83	61.65	69.69	77.54
colors.ts	0	0	0	0
font-family.ts	0	0	0	0