Chrome extension experiments

[hult]

Trying to import and bundle polarkit in the Chrome extension.

Learnings:

• Importing something depending on Next is going to be hard
• Typescript hasn't been able to process package.json exports directives outside of node, but in 5.0, there's moduleResolution: "bundler": Support package.json exports outside of Node microsoft/TypeScript#50794
• Next probably does some magic to be able to access process.env client-side
• Other than that, it seems to work