We should remove the crypto-browserify as its in a single place in whole codebase. In addition the only function that we use from this package is a hash generator that is replaceable with functions provided in browser native Crypto API and its digest function. 

Steps to reproduce:

1. Run console, debug the code of useUserSettings.ts
2. See that the contents of 'userUid' variable gets initialized as before the changes. 

Current results:

1.  Our codebase uses crypto-browserify to generate hashes for usernames in the useUserSettings hook

Expected results:

1. We should use the Crypto's 'digest' function instead.
2. The crypto-browserify package should be removed from the dependencies.