sr0lle

According to the [docs](https://docs.astral.sh/ty/features/language-server/#feature-reference), neither of the [callHierarchy methods](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#callHierarchy_incomingCalls) is supported yet. Both methods are incredibly helpful when navigating or refactoring large projects, so it would be fantastic to have...