Improve deserialization with Serde features

[LawsOfScience]

This is just mostly a note for myself, but feel free to comment anything you think is relevant

Just figured out some more of Serde's features that could really help with improving deserialization of JSON from Roblox.

• #[serde(alias = "")]: useful for if fields are named different things but are otherwise the same
• name: Option<Value>: can handle fields just not existing
  • So can #[serde(default)] or #[serde(default = "path")]
• #[serde(rename(deserialize = "de_name"))] can help for mapping camelCase names to snake_case names

Honestly, this website will probably be really useful.