[Cashtab] Convert Home screen to typescript

Summary:
Working on a broader refactor to how TX history is loaded and parsed, will help to have the parent component in ts

Part of a wider effort to gradually convert all of Cashtab to typescript

Test Plan: npm test

Reviewers: #bitcoin_abc, emack

Reviewed By: #bitcoin_abc, emack

Subscribers: emack

Differential Revision: https://reviews.bitcoinabc.org/D17353