Use ilm_Control library instead of ivi-wm protocol directly.

Currently,  low level wayland code exists in Window Manager Class. This causes maintenance difficulty.

To improve maintenance of Window Manager code, and to conceal the messed code of manipulating directly wayland protocol,

I replace ivi-wm code to ilm_Control library.

This library provides

• initialization of wayland and ivi-wm protocol
• sync functions to get information from wayland
• Simple API

The concern point is that the library uses thread internally. So Window Manager needs to care thread handling.