[Cashtab] Convert JS common components to ts

Summary:
Continue incremental implementation of ts in Cashtab

Convert Common components (except CustomIcons.js) that are still js to ts

CustomIcons.js is actually a bigger change and should be its own diff

Test Plan: npm test

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D18353