Implement a new LED Driver & animation framework

[feelfreelinux]

Blocked by: https://github.com/feelfreelinux/euphonium/issues/52

• [ ] Replace the current RMT driver with NeoPixelBus library
• [ ] Expose an API to berry that allows for direct manipulation of the LEDS
• [ ] Once Timer function is implemented, utilise it to tick and update the animation class
• [ ] Add an option in the webinterface that allows for a selection between predefined animation classes

[feelfreelinux]

Refer to: https://github.com/nvschilleman/euphonium/commits/master