Add option to log order creation requests and responses (#28831)

[DWDBE]

New 'Log order creation request and response' setting in the Logs group. When enabled, order creation ERP calls (CreateOrder=true) are always written to the log — including the request, response, connection errors, and response errors — even when general request/response logging is off.

Summary

• Adds a new Log order creation request and response checkbox in the LI Logs settings group
• When enabled, all ERP communication for orders where CreateOrder=true is written to the log (request, response, connection errors, response errors) — independently of the general Log request and response content toggle
• Closes work item #28831

Changes

• Settings.cs / ISettings.cs — new LogOrderCreationRequests property, copied in UpdateTargetFromSource
• LiveIntegrationAddIn.cs — new AddIn parameter in the Logs group (order 375)
• Logger.cs — IsOrderCreationContext flag; IsAllowedAddToLog passes DebugInfo, ConnectionError, and ResponseError when the flag is set and LogOrderCreationRequests is enabled
• OrderHandler.cs — sets logger.IsOrderCreationContext = createOrder before GetResponse, resets after

Test plan

• Enable the new setting, disable general request/response logging — confirm only order creation calls appear in the log
• Disable the new setting — confirm no extra entries appear
• Enable both settings — confirm no double-write (each message logged once)
• Trigger a connection error on an order creation — confirm it is logged when the new setting is on