Merged in fix-demo-labyrinth-NRRPLT-8301 (pull request #59)

[NRRPLT-8301] Fix demo spacebot labyrinth world model.

* [NRRPLT-8301] Add spot element to spotlights in spacebotcup_world_labyrinth
* [NRRPLT-8301] Increase spotlight_3's {inner,outer}angle so to increase red stimulus

Approved-by: Vahid Zolfaghari