Function decrease_liquidity_quote_a 

pub fn decrease_liquidity_quote_a(
    token_amount_a: u64,
    slippage_tolerance_bps: u16,
    current_sqrt_price: u128,
    tick_index_1: i32,
    tick_index_2: i32,
    transfer_fee_a: Option<TransferFee>,
    transfer_fee_b: Option<TransferFee>,
) -> Result<DecreaseLiquidityQuote, QuoteError>

Calculate the quote for decreasing liquidity given a token A amount.