Update. Controller + extra stuff

Added controller support for controling the snake and UI navigation.

Increased light intencity to make lavels look brighter.

Added more building models for alien planets.

Crab enemy now moves sideways.

When pausing the game moving monsters used to keep on moving - fixed.

Removed slight glow from planet's material settings.

replaced round plannet's model with more detailed one to make planets even rounder.