Nuclear mine balance

[Its Raisu]

Only changes I think are remotely necessary are:

1) Potentially make LFs max speed somewhere around 225 or 235. Whether that's done through bumping Impulse or Thrust capacity is a separate decision (with a potentially faster thrust drain by reducing their Thrust Recharge Rate to 80 or so)

2) Make Nuclear mines so that they go further behind the ship launching them so limit/remove the "forward nuke" 'technique' which tbh is really just a gimmick. That way there is a trade off between raw Damage vs capability. Ripper could still be used for forward nuking but you sacrifice raw damage for that capability.