feat: add option to specify tsc path

[dpnolte]

Summary

For the typescript target, this PR aims to add an option to specify a path to tsc. We are using bob in a workspace setup. With this option, we can resolve tsc's path to the workspace root's node modules so that not the global tsc is being used.

Test Plan

I've tested this fork with our setup and it works.

Checklist

• [X ] I have tested this on a device and a simulator
• I added the documentation in README.md
• [N/A ] I mentioned this change in CHANGELOG.md
• [ X] I updated the typed files (TS and Flow)
• [N/A ] I added a sample use of the API in the example project (example/App.js)

[satya164]

Thanks a lot for the PR. I left 2 small comments

[dpnolte]

Thanks for your feedback! I've incorporated your comments in the latest commit.
Also, as a fellow react-native developer, I'd like to say thank you for all the work you're putting into the react native community 🥇

[dpnolte]

i've also updated the error/warning messages

[jamesgeorge007]

Left couple of suggestions.