[BG-8471] Add usdc to sdk
[BG-8471] Add usdc to sdk

Reviewers: bigly, isaac, mtoda

Reviewed By: isaac

Subscribers: alex, tyler

Differential Revision: https://phabricator.bitgo.com/D10223

BitGo/BitGoJS,BitGo/BitGoJS,BitGo/BitGoJS,BitGo/BitGoJS