Refactor SQL execution and enhance envelope creation

- Updated `ISQLExecutor<TEntity>` to inherit from new `ISQLExecutor` interface for improved SQL execution flexibility.
- Added package references for `Dapper` and `DigitalData.Core` in project files.
- Modified `CreateEnvelopeCommand` to include `[BindNever]` on `UserId` for better model binding control.
- Refactored `CreateEnvelopeCommandHandler` to use `DynamicParameters` for SQL parameter handling.
- Updated `CreateEnvelopeSQL` to select only the top record for performance.
- Introduced `GetIdOrDefault` method in `ControllerExtensions` for user ID retrieval with fallback.
- Added `CreateAsync` method in `EnvelopeController` for envelope creation using `IMediator`.
- Ensured infrastructure project has necessary package references.
- Refactored `SQLExecutor` to implement new interface and simplified constructor.
- Introduced `SQLExecutorBaseEntity` for entity-specific SQL command execution.

EnvelopeGenerator.Application/Envelopes/Commands/CreateEnvelopeCommandHandler.cs

@@ -1,4 +1,5 @@
 using AutoMapper;
+using Dapper;
 using EnvelopeGenerator.Application.Contracts.SQLExecutor;
 using EnvelopeGenerator.Domain.Entities;
 using MediatR;
@@ -34,16 +35,14 @@ public class CreateEnvelopeCommandHandler : IRequestHandler<CreateEnvelopeComman
     /// <returns></returns>
     public async Task<CreateEnvelopeResponse?> Handle(CreateEnvelopeCommand request, CancellationToken cancellationToken)
     {
-        object[] parameters = new object[]
-        {
-            new SqlParameter("@UserId", request.UserId),
-            new SqlParameter("@Title", request.Title),
-            new SqlParameter("@TfaEnabled", request.TFAEnabled ? 1 : 0),
-            new SqlParameter("@Message", request.Message)
-        };
+        var parameters = new DynamicParameters();
+        parameters.Add("@UserId", request.UserId);
+        parameters.Add("@Title", request.Title);
+        parameters.Add("@TfaEnabled", request.TFAEnabled ? 1 : 0);
+        parameters.Add("@Message", request.Message);
 
-        var envelope = await _sqlExecutor.Execute<CreateEnvelopeSQL>(cancellationToken, parameters).FirstOrDefaultAsync();
+        var envelopes = await _sqlExecutor.Execute<Envelope, CreateEnvelopeSQL>(parameters, cancellationToken);
 
-        return _mapper.Map<CreateEnvelopeResponse>(envelope);
+        return _mapper.Map<CreateEnvelopeResponse>(envelopes.FirstOrDefault());
     }
 }