[MERGED PR] Loose singularity rebalance

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[balance][game objects]
About the PR
* Anti-singularity buster changes
* Hitting a singularity with 3 or less radius will create a white hole (as before)
* Hitting a larger singularity than that will cause the singularity to shrink by two radius, with an accompying visual effect
* Singularity movment changes
* Singularities now move slightly more smoothly (e.g. from 4/5.1/8/9.1 to 4/6/8/10)
* Singularities can move diagonally
* Singularities will switch between stepping in random directions and taking steps towards a random station turf

Why's this needed?
make loose singularities a little more dangerous to the station and less binary

Changelog

Code:

changelog
(u)glowbold
(*)Anti-singularity buster shots will shrink large singularities. Small singularities will explode into white holes.
(+)Loose singularities are more likely to drift towards station tiles.

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