Use fixed paths for typescript SCSS imports

[dsluijk]

Hello there. First of all, great kit! I have been looking for something like this for a while.

Secondly, the modularized imports don't work correctly with (at least) the Parcel and Vite bundler. It cannot find the partial SCSS files, as typescript has no notion of that and does not look for the underscore. This PR updates the import paths in the style Typescript files, to use the actual file paths.

[vercel[bot]]

Someone is attempting to deploy a commit to a Personal Account owned by @wangdicoder on Vercel.

@wangdicoder first needs to authorize it.