Implement submitting bitcoin transactions

[mpetrun5]

We want to be able to submit bitcoin transactions via the ECDSA address of the MPC keyshares.

Implementation details

Implement:

• bitcoin configuration and network support
• bitcoin executor
• bitcoin transaction submitter

The transactions submitted have to be unique and the executor should ensure that the transactions previously submitted are not submitted again. This should be implemented through the store module to maintain state of submissions.

The executor should be able to submit multiple executions via the UTXO input mechanism (each input should correspond to a execution).

Testing details

• unit tests
• e2e tests

Acceptance Criteria

• we can transfer from EVM --> Bitcoin

[MakMuftic]

Not relevant anymore