Function create_taproot_spend_info

Constructs the full Taproot spend info for a script-path-enabled Taproot output. This function: - Converts the given internal and script leaf public keys into x-only format (as required by BIP-341) - Constructs a script leaf of the form ` OP_CHECKSIG` - Commits the script into a Taproot Merkle tree (with a single leaf) - Applies the BIP-341 tweak to the internal key to compute th

(
    internal_key_bytes: &[u8],
    script_key_bytes: &[u8],
)