chore: add @ as alias for frontend root (#414)

frontend/jsconfig.json

frontend/src/App.jsx

frontend/src/AuthContext.jsx

frontend/src/components/ChatBubble/index.jsx

frontend/src/components/DefaultChat/index.jsx

...rc/components/EmbeddingSelection/LocalAiOptions/index.jsx

.../src/components/LLMSelection/AnthropicAiOptions/index.jsx

...end/src/components/LLMSelection/LMStudioOptions/index.jsx

...tend/src/components/LLMSelection/LocalAiOptions/index.jsx

frontend/src/components/LLMSelection/OpenAiOptions/index.jsx

frontend/src/components/Modals/NewWorkspace.jsx

frontend/src/components/PrivateRoute/index.jsx

frontend/src/components/SettingsSidebar/index.jsx

frontend/src/components/Sidebar/ActiveWorkspaces/index.jsx

frontend/src/components/Sidebar/IndexCount.jsx

frontend/src/components/Sidebar/LLMStatus.jsx

frontend/src/components/Sidebar/index.jsx

frontend/src/components/UserMenu/index.jsx

...hat/ChatContainer/ChatHistory/HistoricalMessage/index.jsx

...spaceChat/ChatContainer/ChatHistory/PromptReply/index.jsx