superman: further improvements

[sacr1ficez]

• Removed extra table overhead from functions
  -> Localized few of them
• Moved configurable vars to separate .lua
• Moved vectors to separate .lua
  -> Use simple tables from now on
  -> Probably fixes rare error below (for some reason not breaking anything, just annoying script log)
  -> attempt to call method 'Normalize' (a nil value)

• Different, and more effective approach for getting flying players around; instead of searching for players in radius of 300, script now gets only those who are streamed in.
  -> This also ensures that players are in same interior & dimension.

[Dutchman101]

Thanks a lot, looks good