Refactor envelope receiver command and response handling

- Updated `CreateEnvelopeReceiverCommand` to specify response type for `IRequest`.
- Enhanced `CreateEnvelopeReceiverCommandHandler` to use `AutoMapper` and return `CreateEnvelopeReceiverResponse`.
- Modified `Handle` method to map envelope data and populate recipient lists.
- Changed `CreateEnvelopeReceiverResponse` to inherit from `CreateEnvelopeResponse` and added new properties.
- Adjusted mapping profile to map `Envelope` to `CreateEnvelopeReceiverResponse`.
- Created new mapping profile for `Receiver` to `ReceiverReadDto`.

EnvelopeGenerator.Application/DTOs/Receiver/ReceiverReadDto.cs

@@ -1,6 +1,5 @@
 using DigitalData.Core.Abstractions;
 using DigitalData.Core.DTO;
-using DigitalData.EmailProfilerDispatcher.Abstraction.Attributes;
 using EnvelopeGenerator.Application.DTOs.EnvelopeReceiver;
 using Microsoft.AspNetCore.Mvc;
 using System.Text.Json.Serialization;