ytmapi_rs: Remove raw_query and processed_query functions from public API.

[nick42d]

Replace with more ergonomic alternatives without lifetime requirements. e.g deserialize_query that will return T = DeserializeOwned and string_query that will return pretty printed.

[nick42d]

Since RawResult and ProcessedResult need to be a part of the public API for AuthToken and ParseFrom traits, may not be worth doing this.

[nick42d]

Closing due to above comment