[JavaScript/TypeScript Language Hints] Hide default `Function` properties/methods until manually typed just like in Rust.

まだ誰も着手していません。

Right now if I create a class with static methods/properties or via namespace, it's very hard to distinguish between default and custom ones visually.

I propose to hide those **default** methods, they are not useful to know for beginners, while for experienced ones, it's noisy. Leaving only defined in classes/namespaces.
I'm looking from Rust lang analyzer extension perspective, which does exactly that, and I feel like it's much more convenient, especially if there will be more properties/methods in future.
If the property is fully typed correctly, e.g. `Test.call`, the hint will appear just like typing `Test.constructor`, it's not appearing, but when typed - the hint appears with `Function`.

This can be an option to enable/disable.

まず、issue に記載されているクラスと namespace の補完例を再現し、現在の TypeScript の言語ヒントと Rust analyzer の動作を比較します。Function のデフォルトメンバーが明示的に型指定されるまで非表示になり、カスタムメンバーは表示されたままで、 有効化/無効化オプションが考慮されれば完了です。

索引モデルが issue の本文から書いたものです。