Add native support for css.types.* functions

[necolas]

These functions pass the value straight through on native.

Fix #331
Ref #337

[necolas]

1. The exports need to be updated in the DOM branch too.
2. Make it easy to drop the Types export during internal sync

[github-actions]

workflow: benchmarks/size

Comparison of minified (terser) and compressed (brotli) size results, measured in bytes. Smaller is better.

Results	Base	Patch	Ratio
react-strict-dom/dist/dom/index.js
· compressed	2,514	2,514	1.00
· minified	8,691	8,691	1.00
react-strict-dom/dist/dom/runtime.js
· compressed	855	855	1.00
· minified	2,435	2,435	1.00
react-strict-dom/dist/native/index.js
· compressed	16,039	16,514	1.03	+
· minified	61,718	63,268	1.03	+

[github-actions]

workflow: benchmarks/perf (native)

Comparison of performance test results, measured in operations per second. Larger is better.

Results	Base	Patch	Ratio
css.create
· small	1,136,233	1,085,099	0.95	-
· small with units	500,775	487,391	0.97	-
· small with variables	658,844	615,387	0.93	!!
· several small	357,274	344,890	0.97	-
· large	204,253	200,403	0.98	-
· large with polyfills	147,967	141,591	0.96	-
· complex	103,518	99,796	0.96	-
· unsupported	214,674	208,768	0.97	-
css.createTheme
· simple theme	226,283	227,363	1.00	+
· polyfill theme	212,082	211,693	1.00	-
css.props
· small	231,235	228,779	0.99	-
· small with units	188,911	187,918	0.99	-
· small with variables	113,223	112,912	1.00	-
· small with variables of units	82,852	82,241	0.99	-
· large	96,909	94,690	0.98	-
· large with polyfills	38,432	37,973	0.99	-
· complex	22,328	21,939	0.98	-
· unsupported	141,563	141,604	1.00	+
· simple merge	159,103	158,258	0.99	-
· wide merge	17,026	16,791	0.99	-
· deep merge	16,707	16,485	0.99	-
· themed merge	32,703	32,488	0.99	-