Retro Games using pixel based canvas (v2)

[y0014984]

See #296 for the previous version of branch and pull request.

Misc

• [x] Sync module to computer to allow games

Functions

• [x] createCanvas
• [x] setPixelColor
• [x] getPixelColor
• [x] getCanvasWidth
• [x] getCanvasHeight
• [x] showSplashScreen

Games

• [x] snake

Last things to do

• [x] inherit commands from osCommand instead of introducing new classes
• [x] add getOpts workflow

[y0014984]

@GermanHydrogen I changed now the way, the commands are initialised, like I've done for the security commands. You can now review this PR.