message: add DEPRECATED notice to OnFindApplications
diff: </function>
  <function name="OnFindApplications" messagetype="notification">
  <description>This method must be invoked by HMI to get list of registered apps.</description>
  + <description>DEPRECATED - This RPC is not implemented</description>
  <param name="deviceInfo" type="Common.DeviceInfo" mandatory="false">
  <description>The name and ID of the device the list of registered applications is required for.</description>
  </param>
  