Merge PR #419 - add endless runner watch face

Merge PR #419 - add endless runner watch face

Adds an endless runner game face to the Sensor Watch.

The player character runs endlessly towards the right.
An endless number of obstacles speed towards him.
The player must jump over them or lose the game
when the player character runs smack into the obstacle.
Jumping requires fuel which is a limited resource
that must be managed by the player.

Features selectable difficulties and high score tracking.

Reviewed-by: Matheus Afonso Martins Moreira <matheus@matheusmoreira.com>
GitHub-Pull-Request: https://github.com/joeycastillo/Sensor-Watch/pull/419