feat: implement receipt alias functionality with CRUD operations and integrate with receipt import

backend/prisma/migrations/20260416200000_add_receipt_alias/migration.sql

@@ -0,0 +1,14 @@
+-- CreateTable
+CREATE TABLE `ReceiptAlias` (
+    `id` INTEGER NOT NULL AUTO_INCREMENT,
+    `receiptName` VARCHAR(191) NOT NULL,
+    `productId` INTEGER NOT NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+
+    UNIQUE INDEX `ReceiptAlias_receiptName_key`(`receiptName`),
+    INDEX `ReceiptAlias_productId_idx`(`productId`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- AddForeignKey
+ALTER TABLE `ReceiptAlias` ADD CONSTRAINT `ReceiptAlias_productId_fkey` FOREIGN KEY (`productId`) REFERENCES `Product`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;