Refactor SendEmailAsync to use EmailContext object

Simplified the `SendEmailAsync` method in the `IEmailService`
interface to accept a single `EmailContext` object instead of
multiple parameters. Updated the `SendingEmailConsumer` and
`LimilabsEmailService` classes to align with this change.

In `LimilabsEmailService`, refactored email construction logic
to use properties from the `EmailContext` object, including
`Sender`, `Recipients`, `Subject`, `Body`, and `IsHtml`.
Updated `ConnectAndAuthenticateSmtpAsync` to use the `Sender`
property from `EmailContext`.

These changes improve code readability, reduce parameter
complexity, and ensure consistency across the email service
implementation.

src/infrastructure/DigitalData.MessagingService.Infrastructure/Queue/SendingEmailConsumer.cs

@@ -47,12 +47,7 @@ public sealed class SendingEmailConsumer : IAsyncDisposable
                     if (oMailEvent is not null)
                     {
                         // Send email via SMTP (SMTP config is injected in IEmailService via IOptions)
-                        await EmailService.SendEmailAsync(
-                            oMailEvent.Mail.Sender,
-                            oMailEvent.Mail.Recipients,
-                            oMailEvent.Mail.Subject,
-                            oMailEvent.Mail.Body,
-                            isHtml: oMailEvent.Mail.IsHtml);
+                        await EmailService.SendEmailAsync(oMailEvent.Mail);
 
                         // Acknowledge message after successful processing
                         await channel.BasicAckAsync(args.DeliveryTag, false, args.CancellationToken);