Function rust_3d::functions::sort_and_limit

pub fn sort_and_limit<'a, PSearch, PFind>(
    pc: &'a mut Vec<PFind>, 
    search: &PSearch, 
    max_size: usize
) where
    PSearch: Is3D,
    PFind: Is3D + Clone, 

Helper function to keep a collection of positions limited in size and sorted