Added new Deal endpoints
Added new Deal APIs:
GET /v2/iq/deals/{dealId}GET /v2/iq/deals/{dealId}/activitiesGET /v2/iq/deals
Enhancement to existing Conversations APIs:
GET /v2/iq/conversationsNewmentioned_topic_idrequest field.
GET /v2/iq/deals/{dealId}GET /v2/iq/deals/{dealId}/activitiesGET /v2/iq/dealsGET /v2/iq/conversations
New mentioned_topic_id request field.