feat(useCodeEditor): Add languageClient state to support language servers

- Introduces MonacoLanguageClient state to facilitate language server integration in the code editor.

src/store/useCodeEditor.ts

@@ -1,13 +1,18 @@
 import { create } from "zustand";
 import { DEFAULT_LANGUAGE } from "@/config/language";
 import { SupportedLanguage } from "@/constants/language";
+import { MonacoLanguageClient } from "monaco-languageclient";
 
 interface CodeEditorState {
   language: SupportedLanguage;
+  languageClient: MonacoLanguageClient | null;
   setLanguage: (language: SupportedLanguage) => void;
+  setLanguageClient: (languageClient: MonacoLanguageClient | null) => void;
 }
 
 export const useCodeEditorState = create<CodeEditorState>((set) => ({
   language: DEFAULT_LANGUAGE,
+  languageClient: null,
   setLanguage: (language) => set({ language }),
+  setLanguageClient: (languageClient) => set({ languageClient }),
 }));