`utils::Size` - move to the `utils::Size2`

[mskrasnov]

pub struct Size2 {
    pub units: SizeUnits,
    pub value: f64,
}

pub enum SizeUnits {
    B,
    Kb,
    Mb,
    Gb,
    Tb,
    KiB,
    MiB,
    GiB,
    TiB,
    Unknown,
    None,
}