[Cashtab] Support ALP tokens

Summary:
Add support for ALP tokens (genesis, send, burn, mint)

Will handle listing and agora in a separate diff

Some other changes needed in this diff for things to work:

• Update validation functions as ALP has different max qty per output
• Improve handling of cached token info on Token screen (needed for integration test of how screen handles loading an ALP token)
• new 'alp' dir for function to return alp decimalized max qty; includes first jest ts file, so need jest types dep
• Moved token functions that work for SLP and ALP into a top-level index.ts in new token-protocols dir, including (for now) slpv1 and alp

Test Plan: npm test

Reviewers: #bitcoin_abc, emack, tobias_ruck

Reviewed By: #bitcoin_abc, emack, tobias_ruck

Subscribers: tobias_ruck

Differential Revision: https://reviews.bitcoinabc.org/D17192