[Cashtab] [extension address passing p5] Add detection of Cashtab installation to GetAddress.tsx

Summary:
T2550

Depends on D12317

GetAddress component detects if user has Cashtab installed or not. If not, button becomes a link to install Cashtab.

Test Plan:

cd web/cashtab-components
npm run storybook

The GetAddress component still displays as a button
Navigate to brave://extensions and disable your Cashtab extension(s)
Refresh the storybook
The GetAddress component button now says "Install Cashtab and refresh"

Reviewers: #bitcoin_abc, emack

Reviewed By: #bitcoin_abc, emack

Subscribers: emack

Differential Revision: https://reviews.bitcoinabc.org/D12318