Revert cruiser slots changes

[Haste]

I dislike the idea of just making "forward-facing" and "backward-facing" copies of the same gun. Not only is it lazy, it also loses us some visual clarity. Right now, I know what to expect from a Storm, a Light Mortar, or a Tachyon. It'll always do the same amount of damage, etc. The forward and backward facing versions would not be the same, as Cruiser Heavies are faster and less efficient by design to set them apart from Defense Turrets. I think we already have the solution implemented in the game anyways: the Cruiser Razor - even if it may be a bit (too) difficult to acquire right now (?) - effectively is a forward-facing version of the Storm. It's a hybrid hullbuster but it's still distinct from the Storm.

TL;DR what if we just had more guns and they were still unique

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