Added support for SMS v3

[ib-tjuhasz]

Added

• Most recent Infobip SMS API feature set.
  • Introduced /sms/3/messages (V3) replacing the /sms/2/text/advanced (V2) and /sms/2/binary/advanced (V2) endpoints.
  • Introduced /sms/3/reports (V3) replacing /sms/1/reports (V1) endpoint.
  • Introduced /sms/3/logs (V3) replacing /sms/1/logs (V1) endpoint.

Changed

• Fixes and changes

  • Changed 'sentAt', 'doneAt' field type in MmsReport from String to OffsetDateTime since it didn't correspond to the state of the endpoint.

• Removed classes and unified structures

  • Removed delivery time window configuration classes (SmsDeliveryTimeWindow, MmsDeliveryTimeWindow, ViberDeliveryTimeWindow, CallRoutingAllowedTimeWindow, CallsDeliveryTimeWindow, SmsDeliveryTimeWindow, CallsTimeWindow) in favor of a unified class: DeliveryTimeWindow
  • Removed delivery time configuration classes (SmsDeliveryTimeFrom, SmsDeliveryTimeTo, MmsDeliveryTime, ViberDeliveryTime, CallsTimeWindowPoint, WebRtcTimeOfDay, CallRoutingAllowedTimeFrom, CallRoutingAllowedTimeTo, WebRtcTimeOfDay) in favor of a unified class: DeliveryTime
  • Removed delivery day enumeration classes (SmsDeliveryDay, MmsDeliveryDay, CallsDeliveryDay, CallRoutingAllowedDay) in favor of a unified class: DeliveryDay
  • Removed recipient type enumeration class (SmsIysRecipientType) in favor of a unified class: RecipientType

• Documentation

  • Fixed Javadoc.
  • Updated CHANGELOG and README.