Add option to include and display a photo of the sales receipt

Implements `photoTicket` field in `Sale` and `FormData` types, adds UI elements in `NewSaleForm` and `SaleDetailsModal` components, and updates schema.ts.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: dec54137-d5a2-4406-8ad4-5f2f9fb110bf
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/7df9e24f-d78b-4589-9a08-c70e02d6d7d9.jpg

shared/schema.ts

@@ -83,6 +83,7 @@ export const sales = pgTable("sales", {
   // Photos
   photoRecto: text("photo_recto"),
   photoVerso: text("photo_verso"),
+  photoTicket: text("photo_ticket"),
 });
 
 // Relations