refactor: remove SalesInvoiceItemsService and update sales invoice handling

- Deleted SalesInvoiceItemsService as it was not implemented.
- Changed variable declaration from `const` to `let` in SalesInvoicesService for sales invoice creation.
- Updated response handling after sending to TSP provider in SalesInvoicesService.
- Renamed payload properties in TspProvider DTOs for clarity.
- Enhanced error handling in SalesInvoiceTspSwitchService for unsupported providers.
- Refactored SalesInvoiceTspService to utilize utility functions for payload building and sending.
- Updated PrismaService to increase connection limit and utilize dynamic options.
- Added new migration scripts to update database schema for sale_invoice_tsp_attempts.
- Introduced utility functions for building payloads and handling responses in sales invoice processing.

src/common/queryConstants/index.ts

@@ -1,9 +1,11 @@
 import * as CONSUMER from './consumer'
 import * as LICENSE_ACTIVATION from './licenseActivation'
 import * as POS from './pos'
+import * as SALE_INVOICE from './saleInvoice'
 
 export const QUERY_CONSTANTS = {
   POS,
   CONSUMER,
   LICENSE_ACTIVATION,
+  SALE_INVOICE,
 }