[lua] Move combat folder outside globals and make it load before it

[Xaver-DaRed]

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• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

What title sais.
The reasoning behind it is the amount of require that were, and still probably are, missing from lua scripts.
The end-goal down the line is to have combat logic be separate from the rest whenever possible. We have too many dependencies for no reason.

Steps to test these changes

Draft.