chore: restructure project into backend and frontend folders

- Move all frontend code to frontend/ directory
- Add backend/ with Go project structure (cmd, internal, pkg)
- Add docker-compose.yml for orchestration

frontend/src/types/index.ts

@@ -0,0 +1,30 @@
+export type PickupLocation = 'warehouse' | 'symbat' | 'nursaya' | 'galaktika';
+export type DeliveryStatus = 'new' | 'delivered';
+
+export interface Delivery {
+  id: string;
+  date: string;              // DD-MM-YYYY
+  pickupLocation: PickupLocation;
+  productName: string;
+  address: string;
+  phone: string;
+  additionalPhone?: string;
+  hasElevator: boolean;
+  comment: string;
+  status: DeliveryStatus;
+  createdAt: number;
+  updatedAt: number;
+}
+
+export const pickupLocationLabels: Record<PickupLocation, string> = {
+  warehouse: 'Склад',
+  symbat: 'Сымбат',
+  nursaya: 'Нурсая',
+  galaktika: 'Галактика',
+};
+
+
+export const statusLabels: Record<DeliveryStatus, string> = {
+  new: 'Новое',
+  delivered: 'Доставлено',
+};