Emit semantic tokens for user defined conversions

Feature Request

User defined conversions are the only operator overloads that aren't able to be syntax colored to make them more obvious (aside from new and delete, which I reported recently).

I'd like to request semantic tokens to enable syntax highlighting when a user defined conversion is invoked.

The tricky bit is, which token should it be? On the parentheses? Sometimes there aren't any parenthesis.

Perhaps it should be a modifier on the variable being converted? Can we do that if it's an entire expression? Maybe then we could underline the expression without changing the color of the entire thing.

It would also be nice if "go to definition" worked for the conversion, like other operator overloads. But I don't know if that's feasible.

まず、拡張機能が現在どのように semantic tokens を出力し、他の C++ 演算子オーバーロードに対する go-to-definition をサポートしているかを確認します。括弧なしのケースを含め、報告された変換例を比較し、一貫して適用できるトークン表現を決定します。関連する変換形式について、動作、トークンの選択、および定義への移動のサポートが仕様化され、カバーされていれば完了です。