feat: Initial Material You client implementation

Implemented a Material You (Material 3) client for the bonch-open-api.
- Added API client with axios
- Added Zustand store for API config and user data
- Added Login and Profile pages
- Set up routing with react-router-dom
- Added global styles with Material 3 tokens

Co-Authored-By: Claude <noreply@anthropic.com>

src/types/api.ts

@@ -0,0 +1,17 @@
+export interface Profile {
+  fullName: string;
+  group?: string;
+  faculty?: string;
+  studentId?: string;
+  email?: string;
+  raw: Record<string, string>;
+}
+
+export interface ApiResponse<T> {
+  data: T;
+}
+
+export interface ApiError {
+  error: string;
+  message: string;
+}