Enable extending places where debugId gets injected

[otaviomad]

Right now, debugId only gets injected on specific functions that must be imported specifically from @Vanilla-Extract. This means that if you want to extend functionality and implement custom style generation functions, you don't get access to the name of the constant that is being declared with said functions. This isn't a huge issue since production builds prune the name anyways, but it is a nice feature that gets lost if you stray too much from the dotted line.

I can see this being implemented in two ways:

1. Create a function that takes a callback with debugId as its only argument
   I think this would be the "cleanest" way. Something like:

import { withDebugId } from "@vanilla-extract/internal"

export const styleStates = withDebugId((debugId:string) => { /* ... */ })

The only issue would be that, if I'm correct, this would require some refactoring on the babel plugin for debugIds. Perhaps it would be an interesting idea to make this the standard for even the official functions? This way there's one less thing to maintain with the function list and import checkers.

2. Add a separate configuration key on the plugin options:
   This isn't as nice as the first alternative but it could also work:

export const bundlerConfig = {
  plugins: [
    vanillaExtractPlugin({
      injectDebugIds: [
        {
          scope: "@foo/styleStates",
          function: "styleStates",
          maxParams: 1,
        },
      ],
    }),
  ],
};

This way you guarantee that functions would work and get their debugIds. I understand this is a niche use-case, but it would also help a lot for future possible vanilla extract plugins/extension packages.