Stacks consensus successfully handles SBTC mints

[soju-drinker]

Description

Since the UTXO consolidation design, the responsibility of minting SBTC is now on the stacks core consensus protocol. This ticket tracks the work in the stacks core repo that follows that implementation.

Context / Purpose

Context in the design document: https://docs.google.com/document/d/1NWBB5SQyjG--2Z4T6qeIUy2womXp3c-Cqb9uBsdjeFw/edit

Steps

1. The core consensus protocol needs to change to automatically initiate zero cost mint transactions as soon as stackers detect them
2. The stackers need to be able to interact with the Revealer API
3. The stackers need to implement a periodic polling mechanism that fetching all revealed deposits

Artifacts / Acceptance Criteria

• SBTC deposits are processed and translated into STX transactions as soon as they are detected
• The transactions are zero cost