feat: implement supplier management module with create, update, find, and delete functionalities

- Added CreateSupplierDto for supplier creation
- Added UpdateSupplierDto for supplier updates
- Implemented SuppliersController to handle HTTP requests for suppliers
- Created SuppliersService to manage supplier data using Prisma
- Integrated SuppliersModule to encapsulate suppliers-related components

src/suppliers/dto/create-supplier.dto.ts

@@ -0,0 +1,10 @@
+export class CreateSupplierDto {
+  firstName: string
+  lastName: string
+  email?: string
+  mobileNumber?: string
+  address?: string
+  city?: string
+  state?: string
+  country?: string
+}

src/suppliers/dto/update-supplier.dto.ts

@@ -0,0 +1,11 @@
+export class UpdateSupplierDto {
+  firstName?: string
+  lastName?: string
+  email?: string
+  mobileNumber?: string
+  address?: string
+  city?: string
+  state?: string
+  country?: string
+  isActive?: boolean
+}