chore: migrate from ora to nanospinner

[wojtekmaj]

Summary

This PR migrates the entire repository from ora to nanospinner. nanospinner has a 17.5 TIMES smaller footprint [1], [2], and has just one dependency as opposed to 17.

Note that ora is not removed from this repo's dependencies, as it remains a dependency of inquirer. However, it's removed from package dependencies, resulting in faster install and smaller footprint for the end users.

Test Plan

To be frank, I relied on TypeScript alone for this change and I don't know this project well enough to test it, especially the Android part. nanospinner is almost a drop-in replacement for ora so I don't expect major issues though.

Checklist

• Documentation is up to date.
• Follows commit message convention described in CONTRIBUTING.md.
• For functional changes, my test plan has linked these CLI changes into a local react-native checkout (instructions).