refactor(inventories): restructure inventory and pos account modules, remove deprecated DTOs and controllers

- Removed create and update DTOs for inventory.
- Deleted inventories controller and service.
- Introduced new inventory bank accounts module with controller and service.
- Added new pos accounts module with controller and service.
- Updated Prisma models to reflect changes in bank account relationships.
- Adjusted PosAccount and SalesInvoice models for stricter type definitions.
- Implemented new response mapping for inventory and pos account services.

prisma/migrations/20251225164731_add_inventory_bank_account_table/migration.sql

@@ -0,0 +1,18 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `bankAccountId` on the `Inventories` table. All the data in the column will be lost.
+  - You are about to drop the `_Bank_Accounts_inventoryId_fkey` table. If the table is not empty, all the data it contains will be lost.
+
+*/
+-- DropForeignKey
+ALTER TABLE `_Bank_Accounts_inventoryId_fkey` DROP FOREIGN KEY `_Bank_Accounts_inventoryId_fkey_A_fkey`;
+
+-- DropForeignKey
+ALTER TABLE `_Bank_Accounts_inventoryId_fkey` DROP FOREIGN KEY `_Bank_Accounts_inventoryId_fkey_B_fkey`;
+
+-- AlterTable
+ALTER TABLE `Inventories` DROP COLUMN `bankAccountId`;
+
+-- DropTable
+DROP TABLE `_Bank_Accounts_inventoryId_fkey`;