[IT] Add lottery code to RequestResponse in Epson, Custom PrinterRT and RT Server SCUs

[danielscainifiskaltrust]

Context

The lottery code must be exposed in the RequestResponse across all SCUs that produce receipt signatures. Today it is not consistently present.

Goal

Add the lottery code to the RequestResponse in:

• Epson SCU
• Custom PrinterRT SCU
• RT Server SCU

Scope

• Include the lottery code in the RequestResponse returned by each of the three SCUs
• Keep the field name/format consistent across the three implementations
• Verify the lottery code is correctly populated end-to-end (e.g. with the virtual printers)

Definition of Done

• The lottery code is present in the RequestResponse for the Epson SCU, the Custom PrinterRT SCU and the RT Server SCU.
• Verified in sandbox/development on all three.