Tracking issue: `serde` attribute introspection for `cw-schema`

[aumetra]

This is a ToDo list for attributes of serde that cw-schema should probably somehow be able to represent:

• default
• skip_serializing_if
• skip/skip_serializing/skip_deserializing
• deserialize_with/serialize_with/with
• alias
• Separate renaming for serializing and deserializing