Add `Option` to function arguments in Bytecode Library

[bitzoic]

Motivation

The library currently has the following function definitions:

• pub fn compute_bytecode_root(bytecode: Vec<u8>) -> b256
• pub fn compute_bytecode_root_with_configurables(ref mut bytecode: Vec, configurables: Vec<(u64, Vec)>) -> b256`

This should be changed to a single function with an Option: pub fn compute_bytecode_root(bytecode: Vec<u8>, configurables: Option<Vec<(u64, Vec<u8>)>>) -> b256