Adds a MUI button to a given layout.
Example - AddButton
cfg.Light
cfg.MUI
function OnStart()
{
lay = MUI.CreateLayout("Linear", "VCenter,FillXY")
btn1 = MUI.AddButton(lay, "Button 1", 0.35, null, "raised")
btn2 = MUI.AddButton(lay, "Button 2", 0.35, null, "raisedo")
btn3 = MUI.AddButton(lay, "Button 3", 0.35, null, "round")
btn4 = MUI.AddButton(lay, "Button 4", 0.35, null, "roundo")
btn5 = MUI.AddButton(lay, "Button 5", 0.35, null, "elegant")
btn6 = MUI.AddButton(lay, "Button 6", 0.35, null, "outlined")
btn7 = MUI.AddButton(lay, "Button 7", 0.35, null, "contained")
btn8 = MUI.AddButton(lay, "Button 8", 0.35, null, "text")
btn9 = MUI.AddButton(lay, "Button 9", 0.35, null, "flat")
btn10 = MUI.AddButton(lay, "[fa-android] Android", 0.35, null, "text")
btn11 = MUI.AddButton(lay, "[fa-folder] Folder", 0.35, null, "flat")
app.AddLayout(lay)
}