* fix: switch to gen-lsp-types
[gen-lsp-types](https://github.com/ribru17/gen-lsp-types) is an
alternative to the lsp-types crate, with types generated via codegen
from the official LSP Metamodel for correctness and completeness.
lsp-types issues fixed in gen-lsp-types:
- https://github.com/gluon-lang/lsp-types/issues/310
- https://github.com/gluon-lang/lsp-types/issues/308
- https://github.com/gluon-lang/lsp-types/issues/284
- https://github.com/gluon-lang/lsp-types/issues/278
- https://github.com/gluon-lang/lsp-types/issues/277
- https://github.com/gluon-lang/lsp-types/issues/260
- https://github.com/gluon-lang/lsp-types/issues/245
- https://github.com/gluon-lang/lsp-types/issues/93
* fix: cargo update, clippy fixes