define websockets (channels, eventnames, etc)

[OliverWich]

Events:

game changed

CHANGE ON:

• status
• players
• current round
  • status
  • time

Player changed

CHANGE ON:

• robots
• money

robots changed

CHANGE ON:

• health
• energy
• inventory
• stats

map changed

CHANGE ON:

• new planet on map
• robot moved