feat!: automatic NoteInterface and NoteGetterOptions auto select

[Thunkar]

Partially addresses: #4519 (moved autogeneration to the macro, even if not incremental)
Closes: #3011

Added the #[aztec(note)] attribute, which automatically implements most of the NoteInterface trait in a struct marked as such, plus several utilities. Even if this adds a fair share of "magic" to the note implementation logic, it is structured in a way that it's hopefully easy to follow, including meaningful errors attached to the correct span during the process.

Hey you! Implement the trait!

But only the meat and potatoes though.

As long as the user doesn't want to do any custom stuff, get_header, set_header, compute_note_content_hash, get_note_type_id, serialize_content and deserialize_content get automatically implemented. Any combination of them can be overridden by the developer though.

A metadata struct is also added, which takes the following form:

struct CardNote {
    points: FieldSelector,
    randomness: FieldSelector,
    owner: FieldSelector,
}

This is used to implement a properties() function, which in turn can be used in conjunction with the NoteGetterOptions.select and .sort