Add language server control tool into the status bar (#32490)

Release Notes:

- Added the language server control tool into the status bar

---------

Co-authored-by: Nate Butler <iamnbutler@gmail.com>

crates/language_tools/src/language_tools.rs

@@ -1,17 +1,54 @@
 mod key_context_view;
 mod lsp_log;
+pub mod lsp_tool;
 mod syntax_tree_view;
 
 #[cfg(test)]
 mod lsp_log_tests;
 
-use gpui::App;
+use gpui::{App, AppContext, Entity};
 
 pub use lsp_log::{LogStore, LspLogToolbarItemView, LspLogView};
 pub use syntax_tree_view::{SyntaxTreeToolbarItemView, SyntaxTreeView};
+use ui::{Context, Window};
+use workspace::{Item, ItemHandle, SplitDirection, Workspace};
 
 pub fn init(cx: &mut App) {
     lsp_log::init(cx);
     syntax_tree_view::init(cx);
     key_context_view::init(cx);
 }
+
+fn get_or_create_tool<T>(
+    workspace: &mut Workspace,
+    destination: SplitDirection,
+    window: &mut Window,
+    cx: &mut Context<Workspace>,
+    new_tool: impl FnOnce(&mut Window, &mut Context<T>) -> T,
+) -> Entity<T>
+where
+    T: Item,
+{
+    if let Some(item) = workspace.item_of_type::<T>(cx) {
+        return item;
+    }
+
+    let new_tool = cx.new(|cx| new_tool(window, cx));
+    match workspace.find_pane_in_direction(destination, cx) {
+        Some(right_pane) => {
+            workspace.add_item(
+                right_pane,
+                new_tool.boxed_clone(),
+                None,
+                true,
+                true,
+                window,
+                cx,
+            );
+        }
+        None => {
+            workspace.split_item(destination, new_tool.boxed_clone(), window, cx);
+        }
+    }
+    new_tool
+}