Move Settings to its own crate

Co-authored-by: Keith Simmons <keith@zed.dev>

crates/theme_selector/Cargo.toml

@@ -12,6 +12,7 @@ editor = { path = "../editor" }
 fuzzy = { path = "../fuzzy" }
 gpui = { path = "../gpui" }
 theme = { path = "../theme" }
+settings = { path = "../settings" }
 workspace = { path = "../workspace" }
 log = "0.4"
 parking_lot = "0.11.1"

crates/theme_selector/src/theme_selector.rs

@@ -9,9 +9,10 @@ use gpui::{
 };
 use std::{cmp, sync::Arc};
 use theme::{Theme, ThemeRegistry};
+use settings::Settings;
 use workspace::{
     menu::{Confirm, SelectNext, SelectPrev},
-    Settings, Workspace,
+    Workspace,
 };
 
 pub struct ThemeSelector {