Extract paths out of util (#13182)

This PR extracts the definition of the various Zed paths out of `util`
and into a new `paths` crate.

`util` is for generic utils, while these paths are Zed-specific. For
instance, `gpui` depends on `util`, and it shouldn't have knowledge of
these paths, since they are only used by Zed.

Release Notes:

- N/A

crates/languages/src/json.rs

@@ -19,7 +19,7 @@ use std::{
     sync::{Arc, OnceLock},
 };
 use task::{TaskTemplate, TaskTemplates, VariableName};
-use util::{maybe, paths, ResultExt};
+use util::{maybe, ResultExt};
 
 const SERVER_PATH: &str = "node_modules/vscode-json-languageserver/bin/vscode-json-languageserver";