Unify type of static css prop and dynamic css mixin

[Mad-Kat]

Fixes #256

• Unifies static CSS prop and dynamic CSS mixin types.
• Exports a new type CSSProp that can be used by custom components to receive the css prop in a somewhat typesafe manner

usage:

const MyDivProps = ComponentProps<"div">;

const MyComponent: FunctionComponent<MyDivProps & CSSProp> = (props) =>
   <div {...p}>This spreading works</div>;

[changeset-bot]

🦋 Changeset detected

Latest commit: 9ea2e6b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
next-yak	Patch

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[codspeed-hq]

CodSpeed Performance Report

Merging #257 will improve performances by 12.54%

_{Comparing unify-type-of-static-and-dynamic-css (9ea2e6b) with main (d4379a2)}

Summary

⚡ 1 improvements
✅ 1 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	unify-type-of-static-and-dynamic-css	Change
⚡	render KanjiLetterComponentYak	270.6 ms	240.4 ms	+12.54%