implement more serde field attributes

[jordens]

trafficstars

There are a bunch of serde field attributes that would be useful to forward/leverage. E.g.

• [x] getter #199
• [x] skip #183
• [ ] alias
• [x] rename #207
• [x] {,deserialize_,serialize_}with and related: https://docs.rs/serde-aux/latest/serde_aux/field_attributes/index.html, done with getter, getter_mut, typ, validate etc.
• [ ] bound
• [ ] flatten #236 vs #234
• [ ] borrow ?