Remove "--nogui" from velocity/waterfall

[QuartzWarrior]

Remove the "--nogui" from the velocity option in /src/data/environment/operatingSystem.ts

Having this option causes the velocity servers to crash. I tried fixing it myself, but my limited knowledge of typescript messed me up.

[encode42]

Already dealt with in the qwik rewrite!

(line 41 already checks if the gui key exists in the selected environment. In Velocity's case, it does not, so the --nogui flag will not be added)

[QuartzWarrior]

I'm assuming the qwik rewrite hasn't been implemented then, right?

[encode42]

Indeed