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.

src/generated/prisma/models/SalesInvoice.ts

@@ -547,6 +547,14 @@ export type SalesInvoiceUncheckedUpdateManyWithoutCustomerNestedInput = {
   deleteMany?: Prisma.SalesInvoiceScalarWhereInput | Prisma.SalesInvoiceScalarWhereInput[]
 }
 
+export type NullableIntFieldUpdateOperationsInput = {
+  set?: number | null
+  increment?: number
+  decrement?: number
+  multiply?: number
+  divide?: number
+}
+
 export type SalesInvoiceCreateNestedOneWithoutItemsInput = {
   create?: Prisma.XOR<Prisma.SalesInvoiceCreateWithoutItemsInput, Prisma.SalesInvoiceUncheckedCreateWithoutItemsInput>
   connectOrCreate?: Prisma.SalesInvoiceCreateOrConnectWithoutItemsInput