lrc: add setAccountEnabled() function to properly change account enable state

- the function will call sendRegister that will also saveConfig
  we can just change the enable option in account so that
  reduce the complexity of calling setAccountConfig

Change-Id: Id37093fb174dd45dadf2886063da6779ea7bcc47

src/api/newaccountmodel.h

@@ -76,6 +76,14 @@ public:
      * flag account corresponding to passed id as freeable.
      */
     void flagFreeable(const std::string& accountId) const;
+
+     /**
+     * set account enable/disable, save config and do unregister for account
+     * @param accountId.
+     * @param enabled.
+     */
+    void setAccountEnabled(const std::string& accountID, bool enabled) const;
+
     /**
      * saves account config to .yml
      * @param accountId.

src/newaccountmodel.cpp

@@ -175,6 +175,12 @@ NewAccountModel::getAccountList() const
     return accountsId;
 }
 
+void
+NewAccountModel::setAccountEnabled(const std::string& accountId, bool enabled) const
+{
+     ConfigurationManager::instance().sendRegister(QString::fromStdString(accountId), enabled);
+}
+
 void
 NewAccountModel::setAccountConfig(const std::string& accountId,
                                   const account::ConfProperties_t& confProperties) const