[Feature]: Add bitcoin transaction fee validation

[djordon]

Feature - Add bitcoin transaction fee validation

1. Description

Whenever we validate a complete-deposit or withdrawal-accept Stacks transaction, we need to inspect an associated bitcoin transaction to verify that the "fee" used in the Stacks transaction matches what it should be. This is needed to make sure that every element in the Stacks transaction matches up what the signers think that it should be.

1.1 Context & Purpose

The validation code in #545 only checks that the fee is reasonable, not that it is computed correctly. We should add functionality that computes the fee associated with each input and output of a bitcoin transaction. This is also likely needed for validating for #286.

2. Technical Details:

2.1 Acceptance Criteria:

• Add functionality that computes the fee associated with each input and output of a bitcoin transaction.
• Use this functionality when validating Stacks complete-deposit or withdrawal-accept transactions.

3. Related Issues and Pull Requests (optional):

• feat: add validation for complete-deposit transactions #545
• feat: add validation for accept-withdrawal-request transactions #555
• [Feature]: Charge fees based on size #182
• [Feature]: Validate bitcoin transaction sign requests #286