make fuel scooping less of a suicide

[joonicks]

speed and density factored in to how much is scooped hasnt changed, only the threshold where it starts scooping

scooping is still non-trivial

Fixes #5237

[bszlrd]

Feels good to me, based on the save I got from discord. I was able to scoop a full hold of H2 with a Mola Mola, and still had to climb out to orbit.

[bszlrd]

I've took the liberty to edit your description with the Fixes #5237 line for auto-closing that issue upon merge

[joonicks]

note to reviewers: the ease of fuel scooping depends heavily on the planet youre scooping.

without the patch I had to nose-down pretty hard and pass below 40km altitude, praying that aerodynamics wouldnt push me into a death spin and that id'd be able to pull up again, while having maybe a 50/50 chance of scooping anything.

this patch changes scooping from a russian roulette to "keep your hands on the wheel at all times"