First release for the Ender 3 v2!

Here is our first release of a firmware : LeaderOS 1.0! It comes with a set of features described in the README file (since it's the first one), and is available for the Ender 3 v2 with CR Touch (Creality 4.2.2 board)!

To install it, pretty simple :

• Put every file on the root of the SD card
• Flash the LCD first
• Then the board
• DONE !