Function initialize_market_ix 

pub fn initialize_market_ix(
    program_id: &Pubkey,
    market: &Pubkey,
    authority: &Pubkey,
    mint: &Pubkey,
    vault: &Pubkey,
    oracle: &Pubkey,
    matcher: &Pubkey,
    token_program: &Pubkey,
    args: InitializeMarketArgs,
) -> Instruction