feat(database): initialize database schema and triggers

- Created initial database schema with tables for Users, Roles, Products, and related entities.
- Added foreign key constraints to maintain data integrity across tables.
- Implemented triggers for managing stock movements on insert, update, and delete operations.
- Developed scripts to dump existing triggers and pull trigger definitions from the database.

src/purchase-receipt-items/dto/create-purchase-receipt-item.dto.ts

@@ -1,24 +1,25 @@
 import { Type } from 'class-transformer'
-import { IsInt, IsNumber } from 'class-validator'
+import { IsNotEmpty, IsNumber, Min } from 'class-validator'
 
 export class CreatePurchaseReceiptItemDto {
   @Type(() => Number)
   @IsNumber()
+  @Min(0)
   count: number
 
   @Type(() => Number)
   @IsNumber()
+  @Min(0)
   fee: number
 
   @Type(() => Number)
   @IsNumber()
+  @Min(0)
   total: number
 
   @Type(() => Number)
-  @IsInt()
-  receiptId: number
-
-  @Type(() => Number)
-  @IsInt()
+  @IsNotEmpty()
   productId: number
+
+  description?: string
 }