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/project/src/prettier_support.rs

@@ -18,8 +18,9 @@ use language::{
 };
 use lsp::{LanguageServer, LanguageServerId};
 use node_runtime::NodeRuntime;
+use paths::DEFAULT_PRETTIER_DIR;
 use prettier::Prettier;
-use util::{paths::DEFAULT_PRETTIER_DIR, ResultExt, TryFutureExt};
+use util::{ResultExt, TryFutureExt};
 
 use crate::{
     Event, File, FormatOperation, PathChange, Project, ProjectEntryId, Worktree, WorktreeId,