Cache TypeScript config file bundles

[ds300]

Follow up to #4

If the user uses a TypeScript config file, we bundle it with esbuild before loading it.

If we can get the list of input files to that bundle, we can create a hash manifest the same way we do for input files in lazyrepo, and then use that to avoid bundling the config file or even loading esbuild next time lazyrepo is invoked.

If the use makes a change to any of the files used to create the bundle it should invalidate the cache and re-bundle the file.

[judicaelandria]

Hey @ds300 I would love to work on this one, :)

[ds300]

All yours!