feat: update validation and exception handling, refactor controller routes, and enhance sales invoice item DTO

- Removed global validation pipe and added a new ValidationExceptionFilter for better error handling.
- Refactored controller routes to use underscores instead of hyphens for consistency.
- Updated CreateSalesInvoiceItemDto to include new fields: quantity, unit_type, and payload.
- Modified CreateSalesInvoiceDto to enforce items as an array with a minimum size.
- Added Enums module to provide gold karat values through a dedicated endpoint.
- Introduced new columns in the database schema for sales invoice items and goods.

prisma/migrations/20260216155640_add/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE `goods` ADD COLUMN `price_text` VARCHAR(100) NULL;

prisma/migrations/20260216170526_init/migration.sql

@@ -0,0 +1,37 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `price_text` on the `goods` table. All the data in the column will be lost.
+  - You are about to drop the column `count` on the `sales_invoice_items` table. All the data in the column will be lost.
+  - Added the required column `quantity` to the `sales_invoice_items` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `unit_type` to the `sales_invoice_items` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- DropForeignKey
+ALTER TABLE `sales_invoice_items` DROP FOREIGN KEY `sales_invoice_items_good_id_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `sales_invoice_items` DROP FOREIGN KEY `sales_invoice_items_service_id_fkey`;
+
+-- DropIndex
+DROP INDEX `sales_invoice_items_good_id_fkey` ON `sales_invoice_items`;
+
+-- DropIndex
+DROP INDEX `sales_invoice_items_service_id_fkey` ON `sales_invoice_items`;
+
+-- AlterTable
+ALTER TABLE `goods` DROP COLUMN `price_text`;
+
+-- AlterTable
+ALTER TABLE `sales_invoice_items` DROP COLUMN `count`,
+    ADD COLUMN `payload` JSON NULL,
+    ADD COLUMN `quantity` DECIMAL(10, 0) NOT NULL,
+    ADD COLUMN `unit_type` ENUM('COUNT', 'GRAM', 'KILOGRAM', 'LITER', 'METER', 'HOUR') NOT NULL,
+    MODIFY `good_id` VARCHAR(191) NULL,
+    MODIFY `service_id` VARCHAR(191) NULL;
+
+-- AddForeignKey
+ALTER TABLE `sales_invoice_items` ADD CONSTRAINT `sales_invoice_items_good_id_fkey` FOREIGN KEY (`good_id`) REFERENCES `goods`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE `sales_invoice_items` ADD CONSTRAINT `sales_invoice_items_service_id_fkey` FOREIGN KEY (`service_id`) REFERENCES `services`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;