feat: Add tickets module and PayPal integration

Introduces a new 'Tickets' module for users to submit and manage issues within their condominium. This includes defining ticket types, statuses, priorities, and categories.

Additionally, this commit integrates PayPal as a payment option for family fee payments, enabling users to pay directly via PayPal using their client ID.

Key changes:
- Added `Ticket` related types and enums.
- Implemented `TicketService` functions for CRUD operations.
- Integrated `@paypal/react-paypal-js` library.
- Added `paypalClientId` to `AppSettings` and `Condo` types.
- Updated `FamilyDetail` page to include PayPal payment option.
- Added 'Segnalazioni' navigation link to `Layout`.

types.ts

@@ -9,6 +9,7 @@ export interface Condo {
   zipCode?: string; // CAP
   notes?: string; // Note
   iban?: string;
+  paypalClientId?: string; // PayPal Client ID for receiving payments
   defaultMonthlyQuota: number;
   image?: string; // Optional placeholder for logo
 }
@@ -108,3 +109,51 @@ export interface AuthResponse {
   token: string;
   user: User;
 }
+
+// --- TICKETS ---
+
+export enum TicketStatus {
+  OPEN = 'OPEN',
+  IN_PROGRESS = 'IN_PROGRESS',
+  RESOLVED = 'RESOLVED',
+  CLOSED = 'CLOSED'
+}
+
+export enum TicketPriority {
+  LOW = 'LOW',
+  MEDIUM = 'MEDIUM',
+  HIGH = 'HIGH',
+  URGENT = 'URGENT'
+}
+
+export enum TicketCategory {
+  MAINTENANCE = 'MAINTENANCE', // Manutenzione
+  ADMINISTRATIVE = 'ADMINISTRATIVE', // Amministrativa
+  NOISE = 'NOISE', // Disturbo/Rumori
+  CLEANING = 'CLEANING', // Pulizie
+  OTHER = 'OTHER' // Altro
+}
+
+export interface TicketAttachment {
+  id: string;
+  ticketId: string;
+  fileName: string;
+  fileType: string; // MIME type
+  data: string; // Base64 Data URI
+}
+
+export interface Ticket {
+  id: string;
+  condoId: string;
+  userId: string;
+  title: string;
+  description: string;
+  status: TicketStatus;
+  priority: TicketPriority;
+  category: TicketCategory;
+  createdAt: string;
+  updatedAt: string;
+  attachments?: TicketAttachment[];
+  userName?: string; // Joined field
+  userEmail?: string; // Joined field
+}