[Bug] Fix calculation of move base power

[DayKev]

What are the changes the user will see?

Move base power will be calculated correctly.

Why am I making these changes?

Move base power calculation is incorrect.

What are the changes from a developer perspective?

Renamed VariablePowerAttr to VariableBasePowerAttr.
Moved application of VariableBasePowerAttr and VariableMovePowerAbAttr to before terastallization base power boost.

Additionally, moves of the Tera Type that have a base power below 60 are increased to 60 base power; this is checked for after Technician's boost [3].

Relevant changes in src/data/move.ts

Screenshots/Videos

How to test the changes?

Checklist

• I'm using beta as my base branch
• There is no overlap with another PR?
• The PR is self-contained and cannot be split into smaller PRs?
• Have I provided a clear explanation of the changes?
• Have I tested the changes manually?
• Are all unit tests still passing? (npm run test:silent)
  • Have I created new automated tests (npm run create-test) or updated existing tests related to the PR's changes?

[Snailman11]

Wondering if this fixes its interaction with Aerilate, where the damage increase is overwritten.

[DayKev]

It should.