Added Configs, Cleaned up, Moved managers

[Mooy1]

(Most files changed are just newlines/indents)

Changes

Cleaned up bossbar stuff a bit Moved all managers to core.managers Added lombok.config to remove prefixes from getters Added .editorconfig so its easier to sync codestyles Cleaned up some stuff Ran intellij reformat on the whole project for hopefully the last time since there's an editorconfig now

Related Issues

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Checklist

• [ ] I have fully tested the proposed changes and promise that they will not break world generation, mob spawning, and the like.
• [ ] I followed the existing code standards and didn't mess up the formatting.
• [ ] I did my best to add documentation to any public classes or methods I added.
• [ ] I have added Nonnull and Nullable annotations to my methods to indicate their behaviour for null values

[Seggan]

@Slimefun-Addon-Community/galactifun-devs mind giving your opinion? We are changing the global code style, after all.