Earthquake not working

[mztulip]

Describe the bug
Earthquakes are not working. Is this feature implemented?

[Try]

Not implemented

[Try]

For now I'll leave here tutorial on nice shake: https://www.youtube.com/watch?v=fn3hIPLbSn8

Relevant class, that is responsible for global effects: GlobalEffects
It already tracks script-side requests in GlobalEffects::quakeEff, just not shakes camera yet.