build: add TypeScript configuration and generate declaration files

- Add tsconfig.json for TypeScript compilation with declaration and source map generation
- Generate .d.ts declaration files for all modules, services, controllers, and models
- Update package.json with NestJS dependencies and TypeScript development tools
- Include database files in the distribution output for persistence

dist/foods/foods.controller.d.ts

@@ -0,0 +1,13 @@
+import { FoodsService } from './foods.service';
+export declare class FoodsController {
+    private foodsService;
+    constructor(foodsService: FoodsService);
+    getFoods(req: any, category: string, q: string): Promise<{
+        filipino_foods: import("../models/food-item.model").FoodItem[];
+        other_foods: import("../models/food-item.model").FoodItem[];
+        categories: string[];
+        current_category: string;
+        search_query: string;
+        user: any;
+    }>;
+}