This seems to be a historical artifact in `lsp_types` - we can use a
regular `use` statement to pull in the `bitflags!` macro rather than
an external crate definition. This fixes rust-analyzer's ability to find
the macro at least on rust-analyzer 2024-02-26.
This is a cosmetic change to replace all direct `use`s of the `url::Url`
type in the `helix-lsp-types` crate with `use crate::Url;`. The types
are the same type currently: this refactor will make a future
replacement of the Url type less noisy.
Connects https://github.com/helix-editor/helix/pull/11889
