Align .editorconfig files

When debugging only
app.Services.GetRequiredService<IPCRBService>();

Injected AppSettings instead of using GetEnvironmentVariable at Services level

Get ready to use VSCode IDE

MesaFabApproval.API/Clients/SmtpClientWrapper.cs

@@ -7,7 +7,7 @@ public interface ISmtpClientWrapper {
 }
 
 public class SmtpClientWrapper : ISmtpClientWrapper {
-    private SmtpClient _client;
+    private readonly SmtpClient _client;
 
     public SmtpClientWrapper(SmtpClient client) {
         _client = client ??
@@ -17,4 +17,4 @@ public class SmtpClientWrapper : ISmtpClientWrapper {
     public void Send(MailMessage message) {
         _client.Send(message);
     }
-}
+}