Function dequantize

pub fn dequantize<T: Coefficient>(
    qindex: u8,
    coeffs: &[T],
    _eob: u16,
    rcoeffs: &mut [MaybeUninit<T>],
    tx_size: TxSize,
    bit_depth: usize,
    dc_delta_q: i8,
    ac_delta_q: i8,
    _cpu: CpuFeatureLevel,
)