wasm draft

[psteinroe]

while trying to add wasm support I realised we need to fix some other things first. keeping this (very messy) pr open to have a note pad and structure my next attempt:

• add our own pglt_text_size crate for schemars implementation and migrate to it
• go through all relevant crates (mainly diagnostics and workspace) and add the missing schemars implementations / derive attributes
• streamline feature names to be "schemars" / "serde" everywhere
• decide if we want to rename to snake_case or camelCase. biome uses camel case because their config is in json. we use mostly snake because we use toml. but for generating ts types, camel makes more sense. we might also go back to a json config to "fix" this :D. once decided, make sure to add it everywhere
• add workspace_types behind a feature flag to generate ts types

I will keep this PR open but will create new prs to do this step by step