Contribute the parsing code in `src/ip/link/detail.rs` to netlink-packet-route

[cathay4t]

const IFLA_PARENT_DEV_NAME: u16 = 56;
const IFLA_PARENT_DEV_BUS_NAME: u16 = 57;
const IFLA_GRO_MAX_SIZE: u16 = 58;
const IFLA_TSO_MAX_SIZE: u16 = 59;
const IFLA_TSO_MAX_SEGS: u16 = 60;
const IFLA_ALLMULTI: u16 = 61;
const IFLA_GSO_IPV4_MAX_SIZE: u16 = 63;
const IFLA_GRO_IPV4_MAX_SIZE: u16 = 64;