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/meal-planner/meal-planner.controller.d.ts

@@ -0,0 +1,15 @@
+import { Response } from 'express';
+import { MealPlannerService } from './meal-planner.service';
+export declare class MealPlannerController {
+    private mealPlannerService;
+    constructor(mealPlannerService: MealPlannerService);
+    getMealPlanner(req: any): Promise<{
+        user: any;
+        dates: any[];
+        meal_plans: {};
+        today: string;
+    }>;
+    autoGenerate(req: any, body: any, res: Response): Promise<void>;
+    addMealPlan(req: any, body: any, res: Response): Promise<void>;
+    toggleComplete(req: any, id: number, res: Response): Promise<void>;
+}