SIENTIAPDE-1174

feat: integrate metrics tracking for sent emails in Email activity

- Added metrics tracking for the number of emails sent, incorporating pod ID, model name, pipeline name, and email group for better monitoring.
- Enhanced logging to provide detailed information on email sending status for each receiver group.

orchestrator/activities/email.py

@@ -2,6 +2,8 @@
 from smtplib import SMTPServerDisconnected
 from temporalio import workflow, activity
 
+from orchestrator import metrics
+
 with workflow.unsafe.imports_passed_through():
     import traceback
     import smtplib
@@ -147,7 +149,6 @@ class Email(BaseActivity):
 
         for group_name, group_config in receiver_groups.items():
             try:
-
                 receivers = ", ".join(group_config['members'])
 
                 self.info(f"Sending email to {group_name}: {receivers}",
@@ -177,6 +178,12 @@ class Email(BaseActivity):
                 group_config['status'] = 'failed'
             else:
                 group_config['status'] = 'sent'
+                metrics.EMAIL_SENT_COUNT.labels(
+                    pod_id=self.pod_id,
+                    model_name=metadata['model_name'],
+                    pipeline_name=metadata['workflow_name'],
+                    email_group=group_name
+                ).inc()
 
             self.info(f"Email sent to {group_name}: {receivers}",
                       metadata=metadata)