Improve the exports and modify the tsup build config

[csandman]

This PR implements two changes. The first is to expand the import and require sections of the exports field in the package.json. I've been noticing some packages have been splitting these out in order to specify a types object for each version of the build. tsup already generated a different types file for each build type automatically, so this seems like a good practice to ensure that when the user is importing the types, they're coming from the right place.

Previously I was just relying on the types paths being inferred from the JS file's import path. This seems to have been working fine, but I believe that regardless of whether you were using CJS or ESM, only the index.d.ts file would ever be imported.

This is in-line with how the new @chakra-ui/react pacakge.json is formatted, so I'm mostly following their lead on this one.

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The other change I made in this PR is to modify the tsup build config. I've never really know whether minifying the output was a good practice when building an npm package. It could be helpful if I was generating a version for direct browser usage, but this package is only ever really meant to be used by node projects that generally have their own build process. So I decided to turn off minification, as well as source map generation.

This is also in-line with Chakra, as I looked through their build files and none of them are minified.

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commit: 765b644

[github-actions]

📊 Package size report   -42.1%↓

File	Before	After
dist/index.js	16.2 kB	100%↑32.5 kB
dist/index.js.map	72.7 kB	—
dist/index.mjs	14.8 kB	109%↑30.9 kB
dist/index.mjs.map	72.7 kB	—
package.json	3.0 kB	5%↑3.1 kB
README.md	47.5 kB	-0.03%↓47.5 kB
Total (Includes all files)	267.8 kB	-42.1%↓154.9 kB
Tarball size	59.8 kB	-48%↓31.1 kB

Unchanged files

File	Size
dist/index.d.mts	19.9 kB
dist/index.d.ts	19.9 kB
LICENSE.md	1.1 kB

_{🤖 This report was automatically generated by pkg-size-action}