I need to assign a delay data to each mode, so Mode should have a value + delay
```rust
#[repr(u16)]
#[derive(Clone, Copy)]
pub enum Mode {
    PowerDown = 0x00,
    Single = 0x01,
    Cont10Hz = 0x02,
    Cont20Hz = 0x04,
    Cont50Hz = 0x06,
    Cont100Hz = 0x08,
    Cont200Hz = 0x0A,
    Cont1Hz = 0x0C,
    SelfTest = 0x10,
}

pub struct mode_values  {
    value:u8,
    ready_check:std::time::Duration
}
```