Add advanced envelope settings and EnvelopeTypeService

Enhanced `EnvelopeDto` with new properties for advanced settings, including final email options, reminders, and expiration settings. Updated `SenderEditorPage.razor` to include a new UI section for configuring these settings, with dropdowns, checkboxes, and input fields.

Introduced `EnvelopeTypeService` to fetch envelope type data from the backend and applied defaults based on the selected envelope type. Registered the service in `Program.cs` for dependency injection.

Improved lifecycle methods in `SenderEditorPage.razor` to load and apply envelope settings. Enhanced localization, error handling, and data binding for the new settings. Updated `CreateEnvelopeCommand` to include the new properties.

Refactored code for better organization and maintainability, and added logging for debugging envelope type loading issues.

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Program.cs

@@ -41,6 +41,7 @@ builder.Services.AddScoped<SignatureService>();
 builder.Services.AddScoped<SignatureCacheService>();
 builder.Services.AddSingleton<AppVersionService>();
 builder.Services.AddScoped<EnvelopeService>();
+builder.Services.AddScoped<EnvelopeTypeService>();
 builder.Services.AddScoped<LocalizationService>();
 builder.Services.AddScoped<ReceiverService>();
 builder.Services.AddScoped<PdfRenderService>();