implements #9658
BREAKING CHANGES:
Possibly breaking if a project has a main field set in the nativescript.config.ts - since after this lands, this value will be used instead of package.json main.
The impact is likely very small, the steps to migrate:
(Option A) remove main from nativescript.config.ts if set
(Option B) update main to the correct path in nativescript.config.ts if set incorrectly
