Add images for Kicad schematics and PCB layout

[Ddevendra]

Every time we need to take a look at schematic or PCB we have to open the complete project in KiCad.
So why not just adding 2-3 images of each screen, that would make it easier to check the circuit whenever necessary.

[Ddevendra]

Just add gerber files to repository and then they can be viewed online at such gerber viewers:

• https://www.pcbway.com/project/OnlineGerberViewer.html
• https://www.altium.com/viewer/