refactor: Revamp PurchaseTicketDialog and introduce useTicketPurchase composable

- Update PurchaseTicketDialog.vue to integrate authentication checks and enhance ticket purchasing flow with wallet support.
- Implement useTicketPurchase composable for managing ticket purchase logic, including payment handling and QR code generation.
- Improve user experience by displaying user information and wallet status during the ticket purchase process.
- Refactor API interactions in events.ts to streamline ticket purchasing and payment status checks.

src/lib/api/lnbits.ts

@@ -17,13 +17,47 @@ interface AuthResponse {
   email?: string
 }
 
+interface Wallet {
+  id: string
+  user: string
+  name: string
+  adminkey: string
+  inkey: string
+  deleted: boolean
+  created_at: string
+  updated_at: string
+  currency?: string
+  balance_msat: number
+  extra?: {
+    icon: string
+    color: string
+    pinned: boolean
+  }
+}
+
 interface User {
   id: string
   username?: string
   email?: string
   pubkey?: string
+  external_id?: string
+  extensions: string[]
+  wallets: Wallet[]
+  admin: boolean
+  super_user: boolean
+  fiat_providers: string[]
+  has_password: boolean
   created_at: string
   updated_at: string
+  extra?: {
+    email_verified?: boolean
+    first_name?: string
+    last_name?: string
+    display_name?: string
+    picture?: string
+    provider?: string
+    visible_wallet_count?: number
+  }
 }
 
 import { getApiUrl, getAuthToken, setAuthToken, removeAuthToken } from '@/lib/config/lnbits'