Cache resulting require paths to speed up module resolution

[airhorns]

Like bootsnap for ruby or https://github.com/bahmutov/cache-require-paths, we can make module name => file resolution go faster by injecting the map ahead of time into the managed process. Not exactly sure the fastest way to do this, but both TypeScript and esbuild know how to do this resolution ahead of time, so we may be able to do it one pass all ahead of time.

Alternatively and less desirably we could just cache the resolved path on the first run and re-use it when in --watch, but that doesn't improve first boot time which I'd like to do.