Solving the nucleus paradox

[domin2ktr]

Brief Description of What This PR Does

This PR reduces the cost of osmoregulation and basic movement by 25%, thereby solving the problem of evolutionary nucleus cost.

• PR author has checked that this PR works as intended and doesn't
  break existing features:
  https://wiki.revolutionarygamesstudio.com/wiki/Testing_Checklist
  (this is important as to not waste the time of Thrive team
  members reviewing this PR)
• Initial code review passed (this and further items should not be checked by the PR author)
• Functionality is confirmed working by another person (see above checklist link)
• Final code review is passed and code conforms to the
  styleguide.

[revolutionary-bot]

The lead programmer for Thrive is currently on vacation until 2026-01-07. Until then other programmers will try to make pull request reviews, but please be patient if your PR is not getting reviewed.

PRs may be merged after multiple programmers have approved the changes (especially making sure to ensure style guide conformance and gameplay testing are good). If there are no active experienced programmers who can perform merges, PRs may need to wait until the lead programmer is back to be merged.

[Patryk26g]

This comment is not needed (and it's 25% not 30%)

[Accidental-Explorer]

I know this is currently not being worked on, so I will just note this for future reference:

Before this could be merged, the tooltips for organelles in the editors would have to correctly be updated to show their new osmoregulation cost, just as happens when you change which membrane you have.