Use `derive_aliases` and `cfg_aliases`

[Nutomic]

https://github.com/nik-rev/derive-aliases

This could simplify a lot of our struct definitions from this:

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[cfg_attr(
  feature = "full",
  derive(Queryable, Selectable, Associations, Identifiable, CursorKeysModule)
)]
...

To this:

#[derive(..ApiStruct)]
#[cfg_attr(feature = "full", derive(..SqlStruct))]
...

[dessalines]

Nice, I like that a lot.

[Nutomic]

https://crates.io/crates/cfg_aliases could also be useful.