API changes and conversion to Kotlin (interafces only just yet)

[Michal-MK]

Kotlinization

• rewrote Java api interfaces to kotlin with small changes
  • IHUDArmor -> I do not see it's point so I kept it the same
  • ILogisticsPowerProvider -> Doc + rename getPowerLevel to getAvailablePower to be more descriptive (...it is OVER NINE THOUSAND!)
  • ILPPipe -> Doc + isRoutedPipe to isRouted -> sounds more natural and it clearly works with the pipe
  • ILPPipeConfigTool -> Doc (wrenchUsed is WIP)
  • ILPPipeTile -> Doc
  • IProgressProvider -> Doc + suggestion
  • IRoutedPowerProvider -> Doc + blockPos to be consistent -> marked get*() as deprecated, the useEnergy/canUseEnergy are confusing

Code changes

CoreRoutedPipe:

• added more Nonnull annotations (how about converting to NotNull from jetbrains.annotations as that is the default when using the refactoring shortcuts?
• simplified canUseEnergy and useEnergy:
• removed the goto... lel
• compressed the if to || && expressions
• some values cannot be null now
• power blocking check is now a streamed
• some checks were performed multiple times and I did not find a reason for it

LogisticsHUDRenderer:

• playerWearsHUD refactored the mess that it was to make it readable

The test setup for usePower refactoring:

[davboecki]

Glancing over this, you have a lot of new ArrayList<>() in there. Some functions are used quite a lot. Maybe check if you can use something like java.util.Collections.emptyList() To reduce the amount of object creation

[bziemons]

Just migrating code to Kotlin is not what we are looking for. We need rewrites of parts of the code to re-license it under dual MMPL and MIT. The later one being the target license for the future.