Make linux prompts a bit better (#13067)

Also prompt with a sensible error on install:cli

Release Notes:

- N/A

crates/zed/src/main.rs

@@ -168,6 +168,9 @@ fn init_ui(app_state: Arc<AppState>, cx: &mut AppContext) -> Result<()> {
     SystemAppearance::init(cx);
     load_embedded_fonts(cx);
 
+    #[cfg(target_os = "linux")]
+    crate::zed::linux_prompts::init(cx);
+
     theme::init(theme::LoadThemes::All(Box::new(Assets)), cx);
     app_state.languages.set_theme(cx.theme().clone());
     command_palette::init(cx);