MessagesModel constructor
      
      MessagesModel(
    
    
- IAccountsModel _accountsModel, [
 - ILogsModel? _logs,
 - int maxItems = 25
 
Implementation
MessagesModel(this._accountsModel, [this._logs, this.maxItems=25]) {
  SiprixVoipSdk().messagesListener = MessagesStateListener(
    sentState: onMessageSentState,
    incoming : onMessageIncoming
  );
}