fix: specify type declaration file in package.json

[JeukHwang]

import { P5CanvasInstance, ReactP5Wrapper } from "@p5-wrapper/react";

This line causes the following error.

There are types at '{project-path}/node_modules/@p5-wrapper/react/dist/component/main.d.ts', but this result could not be resolved when respecting package.json "exports". The '@p5-wrapper/react' library may need to update its package.json or typings.ts(7016)

It is resolved when specifying the type declaration file in package.json

[JeukHwang]

Thanks for making great package

[jamesrweb]

Thanks for making great package

Thank you for contributing @JeukHwang, looks good to me 🚀!

I'll fix the CI pipeline upstream and merge this PR once that's done, then I'll make a deployment with a patch version!