Restructure backend into modular API layers with admin/organizador/invitados routes, add role-based middleware, flatten module models, and update build scripts

packages/legacy/src/gift/api/dto/create-contribution.dto.ts

@@ -0,0 +1,8 @@
+export class CreateContributionDto {
+  giftId!: string;
+  contributorName!: string;
+  contributorEmail?: string;
+  amount!: number;
+  type?: 'individual' | 'group';
+  metadata?: Record<string, any>;
+}

packages/legacy/src/gift/api/dto/create-gift.dto.ts

@@ -0,0 +1,9 @@
+export class CreateGiftDto {
+  name!: string;
+  description?: string;
+  imageUrl?: string;
+  price?: number;
+  experience?: boolean;
+  ownerId?: string;
+  metadata?: Record<string, any>;
+}