Add borderline property for visual + Integrate some shaders in one

Add borderline property for visual + Integrate some shaders in one

Add borderline properies for visual
 - BORDERLINE_WIDTH "borderlineWidth" (float, default = 0.0)
   : Width of the borderline
 - BORDERLINE_COLOR "borderlineColor" (Vector4, default = Color::BLACK)
   : Color of the borderline
 - BORDERLINE_OFFSET "borderlineOffset" (float, default = 0.0)
   : Relative position offset from 'Real' borderline of visual.
     == 0.0f then half is inside, and half is outside of visual.
     == -1.0f then all borderline will be rendered inside of visual.
     == 1.0f then all borderline will be rendered outside of visual.

These three properties are animatable

Also, I integrate image / color / gradient visual shaders in one file.
Cause If I add above feature, the shader files need so many.

Change-Id: Ieeea3c1fd4703c5f446018ceffb46a7b715b36f1
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>