Replace Codepush with EAS updates

[vinayvenu]

Motivation

• Codepush is being retired by March 2025. We need an easy mechanism to push changes to the Javascript code so that we can provide OTA updates to users.
• We are planning to add a lot more algorithms to Shwaas over the next few months

In order to keep the app active and usable, we will need to replace Codepush with an equivalent. Right now, it looks like EAS updates