Add helper functions for creating activity with email response (#49)

* Add helper functions for creating activity with email response

* Update libraries/microsoft-agents-a365-notifications/microsoft_agents_a365/notifications/agent_notification.py

Co-authored-by: Copilot <[email protected]>

* Update libraries/microsoft-agents-a365-notifications/microsoft_agents_a365/notifications/models/email_response.py

Co-authored-by: Copilot <[email protected]>

* Remove AgentNotification helper

* fix whitespace

---------

Co-authored-by: Copilot <[email protected]>

Author: joratz

libraries/microsoft-agents-a365-notifications/microsoft_agents_a365/notifications/models/email_response.py

@@ -1,7 +1,25 @@
 from typing import Literal
+from microsoft_agents.activity.activity import Activity
 from microsoft_agents.activity.entity import Entity
 
 
 class EmailResponse(Entity):
     type: Literal["emailResponse"] = "emailResponse"
     html_body: str = ""
+
+    @staticmethod
+    def create_email_response_activity(email_response_html_body: str) -> Activity:
+        """Create a new Activity with an EmailResponse entity.
+
+        Args:
+            email_response_html_body: The HTML content for the email response.
+
+        Returns:
+            A new Activity instance with type='message' and the EmailResponse entity attached.
+        """
+        working_activity = Activity(type="message")
+        email_response = EmailResponse(html_body=email_response_html_body)
+        if working_activity.entities is None:
+            working_activity.entities = []
+        working_activity.entities.append(email_response)
+        return working_activity