Strip current namespace from inlay type hints

Feature Request

The inlay type hints for auto types currently always show the full namespace like in the following example:

namespace Test {

struct Struct {};

static auto /* Test::Struct */ x = Struct{};

}

For long nested namespaces, this can quickly add up until the type becomes too long and gets shortened. In that case I can no longer see the actual interesting type name, but only the start of the namespace name, the ellipsis and the end of the type.

When working inside of the namespace, I would normally leave out the namespace when referring to the type as can be seen in the example after the assignment. It would be nice if the inlay type could also do this.

まず、C++ のインレイ型ヒントを生成する実装を見つけ、ネストされた namespace 内で完全修飾型がどのようにフォーマットされるかを追跡します。namespace 内に表示されるヒントが現在の namespace を省略しつつ、意味のある型名を引き続き表示し、その namespace の外部では動作を維持できれば完了です。