fix: add prepack script to generate lib/ before publishing

[gin0606]

Summary

Yarn Berry does not automatically run the prepare script during yarn pack. This causes the lib/ directory (generated by bob build) to be missing from the published npm package, resulting in the error:

The resolution for "react-native-square-in-app-payments" defined in "exports" is lib/module/index.js, however this file does not exist.

This PR adds a prepack script that explicitly runs bob build before the tarball is created, ensuring the lib/ directory is included in the published package.

Note: This PR is based on v2.0.0 tag and includes commit 3b19f0e ("update publish pipeline") which was not merged to master.

Related issues

Fix #259

Changelog

• Fixed missing lib/ directory in published npm package by adding prepack script

Test Plan

1. Run yarn pack and verify that lib/ directory is included in the generated tarball
2. Verify the tarball contains lib/module/index.js and lib/typescript/src/index.d.ts

[CLAassistant]

All committers have signed the CLA.

[gin0606]

Hi @mansi-square @plinio-square @Charmis-Square 👋

I'd like to kindly request a review of this PR. This fix addresses a critical issue where the published v2.0.0 package is missing the lib/ directory, making it unusable for consumers.

Since this is a small, low-risk change (adding a prepack script), it would be great to get this merged and a patch release published so users can actually use the latest version.

Please let me know if there's anything I can do to help move this forward. Thanks!

[matanassa]

@mansi-square @plinio-square @Charmis-Square can we please get attention here?

[janroures]

any suggested fix in the meantime?