Feat: Script Type Detection

[alexanderwiederin]

Feature Request: Script Type Detection

Add script type detection methods to identify common Bitcoin script patterns (Taproot, OP_RETURN, P2SH, etc.).

Proposed API

pub trait ScriptPubkeyExt {
   fn is_taproot(&self) -> bool;
   fn is_op_return(&self) -> bool;
   fn is_p2sh(&self) -> bool;
}

Note: should probably expose bitcoin core's existing script classification functions through the C API (.e.g IsPayToScriptHash, IsPayToWitnessScriptHash, etc.) but is out of scope for the current state of the project