da: use bitcoin as DA layer

[tuxcanfly]

Overview

This PR makes Bitcoin available as a DA layer.

op-batcher and op-node are updated to use Bitcoin as a DA layer, reading and writing from it.

Settlement still happens on ethereum, only the data is posted as a bitcoin taproot transaction instead of calldata on ethereum. The corresponding bitcoin transaction hash and output index are posted as calldata to ethereum.

Checklist

• [ ] New and updated code has appropriate documentation
• [ ] New and updated code has new and/or updated testing
• [ ] Required CI checks are passing
• [ ] Visual proof for any user facing features like CLI or documentation updates
• [ ] Linked issues closed with keywords