Trench decay fix, code cleanup & more

[johnb432]

This PR includes a lot of minor code changes, but also some important fixes.

Fixed:

• (Minor) Some function descriptions.
• (Major) A check in decayPFH to stop adding the same trench twice (because 2 init functions are called on a trench).
  https://github.com/johnb432/grad_trenches/blob/34c54342c63b857aebd6fe645ef517cc8368d944/addons/functions/functions/fnc_decayPFH.sqf#L29
  Previously this caused trenches to be removed, regardless if a player had interacted with it within the timeout or not.
• (Medium) A nil and non-case sensitive check in addDigger for the type of digging (nil, "UP" or "DOWN" can be the values).
  https://github.com/johnb432/grad_trenches/blob/34c54342c63b857aebd6fe645ef517cc8368d944/addons/functions/functions/fnc_addDigger.sqf#L34

Changed:

• (Medium) Code cleanup (comments, some simplifying of math, formatting).
• (Minor) Usage of newer or/and faster commands (configOf, items).
• (Personal preference) Steps for trench decay is now linear. When using low decay values, the trench decay seems to be somewhat odd with the current code.

Added:

• (Minor) editorconfig file, for editorconfig https://editorconfig.org/.
• (Minor) When cancelling a trench removal interaction, it resets the decay timer.

I have done some rudimentary testing - everything that was tested works as expected.

I can understand if you don't want various items proposed in here. I also apologize for the inconvenience this big PR will pose.
However please take a look at the 2 medium and major fixes which are by far the most important changes.

[Fusselwurm]

❤️

havent tested functionality, but i love the cleanup ;)

[johnb432]

https://github.com/gruppe-adler/grad_trenches/blob/7b4d29ac89094f87940c177188986d06108d507a/addons/functions/functions/fnc_continueDiggingTrench.sqf#L27
Is test_trench needed? I couldn't find it being referenced anywhere else. so I wanted to delete it, but forgot to - can easily push a commit to fix it if necessary.