[Apps][Examples] Get eToken Info

Summary: Example using chronik to retrieve the genesis details of the eToken and its current stats (e.g. mount minted, burned)

Test Plan:
npm test
npm run getTokenDetails <token id>

Reviewers: bytesofman, #bitcoin_abc

Reviewed By: bytesofman, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D14166