feat: inherited import aliases in tsconfig

[domharries]

This PR adds support for paths (and baseUrl) that are defined in a parent tsconfig.json, linked using the extends field. I came across this issue because this is the default setup for nx projects.

The PR adds node.js style resolution of the extends field, and guards against infinite extends loops. I pulled resolveJson5File out into a separate file as it seems require.resolve is pretty impossible to mock for the tests. The PR changes the logic to eagerly resolve baseUrl into an absolute path, as the value is always relative to whichever config file it was defined in.

I tested using this nx template which uses a parent tsconfig to import the util styles: https://github.com/domharries/cssmodules-nx-example/blob/main/apps/cssmodules-nx-example/src/app/app.tsx

[antonk52]

This has been a missing feature for a while. Appreciate the contribution, comments, test cases, and repro example. I will be releasing a new version shortly