Enhancements to chat session Reports API

Enhancements

• New action_timestamp response field in the following Reports APIs:
  • GET /v2/report/chat/sessions/{sessionId}
  • GET /v2/report/chat/sessions/{sessionId}
  • GET /v2/report/chat/sessions/{sessionId}
• New query_all_modifications request field in the following Reports API:
  • GET /v2/report/chat/sessions/{sessionId}