[stacks-signer] Integration test for complete deposit flow

[jferrant]

Description

Create an integration test that spins up a stacks node, bitcoind, and submits an OP DROP BTC tx and its reveal info via a Challenge STX tx, and ensure that this manifests as sbtc via a corresponding mint call from the node

Similarly test the failure case and ensure no mint is manifested, but a corresponding "proof" stx transaction is submitted (for both rejection and no quorum cases)

Acceptance Criteria

• PR adds the feature ...
• ...