[BIP proposal] Pay to Schnorr Key Hash (P2SKH)

In the conversation regarding the functionality and implementation details of Taproot within the Bitcoin Development Mailing List, a specific approach was advised against by Saint Wenhao. The reasons for this recommendation are well-documented, suggesting that before any changes are attempted, thorough research and understanding of the existing documentation is crucial. This recommendation emphasizes the importance of being well-informed about the intricacies of Taproot's design and its rationale to avoid potential pitfalls in development efforts. Understanding Taproot's established practices and the reasoning behind them is pivotal for anyone looking to contribute effectively to its development.