feat: implement initial database schema and services for authentication, restaurants, categories, and menu items with image support.

prisma/migrations/20251201063501_image/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Category" ADD COLUMN     "image" TEXT;

prisma/schema.prisma

@@ -97,6 +97,7 @@ model Restaurant {
 model Category {
   id   String @id @default(uuid())
   name String
+  image String?
 
   restaurantId String
   restaurant   Restaurant @relation(fields: [restaurantId], references: [id], onDelete: Cascade)