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

src/models/user-goal.model.ts

@@ -0,0 +1,33 @@
+import { Column, Model, Table, BelongsTo, ForeignKey, DataType } from 'sequelize-typescript';
+import { User } from './user.model';
+
+@Table
+export class UserGoal extends Model {
+  @ForeignKey(() => User)
+  @Column
+  UserId: number;
+
+  @BelongsTo(() => User)
+  user: User;
+
+  @Column({ defaultValue: 'recomp' })
+  goal_type: string;
+
+  @Column(DataType.FLOAT)
+  target_weight_kg: number;
+
+  @Column({ type: DataType.FLOAT, defaultValue: 0.5 })
+  weekly_goal_kg: number;
+
+  @Column({ defaultValue: 150 })
+  target_protein_g: number;
+
+  @Column({ defaultValue: 200 })
+  target_carbs_g: number;
+
+  @Column({ defaultValue: 60 })
+  target_fat_g: number;
+
+  @Column({ defaultValue: 2000 })
+  target_water_ml: number;
+}