Added Logitech G915 Lightspeed Layout

[Predator4578]

Added Logitech G915 Lightspeed Layout

The layout Features are;

• Added the 4 "Media Keys" on the Map

• Added the "Light Key" on the Map

• Iso Layout Design from Skygamer

• Working well with Logitech SDK Plugin Connection Correctly (The Media+Light Keys will stay Off OfC)

• Working well with OpenRGB Plugin Connection Correctly (Added 5 Keys Working at correct Position)