Added new engagements APIs, webhook events, and new request and response fields to existing Dispositions APIs

Added

• New Engagements APIs:
  • PUT /v2/contact_center/engagements/{engagementId}/recording/{command}
  • GET /v2/contact_center/engagements/{engagementId}/recordings/status
• New webhook webhook event:
  • contact_center.voicemail_transcript_completed

Changed

• New disposition_type, sub_dispositions request fields in these Dispositions APIs:
  • PATCH /v2/contact_center/dispositions/{dispositionId}
  • POST /v2/contact_center/dispositions
• New disposition_type response field in these Dispositions APIs:
  • POST /v2/contact_center/dispositions
  • GET /v2/contact_center/dispositions/{dispositionId}
  • GET /v2/contact_center/dispositions
• New sub_dispositions response field in this Dispositions API:
  • GET /v2/contact_center/dispositions/{dispositionId}