side mount xLCD for MK4

Notice!!

It is strongly suggested that check my photoes to make sure you know how to install these two parts.

I used two of the silicon feet on the aluminum extrusion to limit the xLCD, just because I got another four by myself, but you actually don't need to do that.

By the way, in order to get the awesome blue light in my photo, please also print this:

RGB Status LED Diffusor by per-form-3d@perform3d

https://www.printables.com/model/764692-original-prusa-xlmk4-rgb-status-led-diffusor-xlcd

结合原有的设计，并以新的方式加以使用。