Small tweak to prevent issues when flares or chemlights are thrown on rocks, however if the rocks have bad geometry/collision you still might have problems.

Script update.
Changes:
- added a small fail safe to prevent multiple execution in MP for the same object
- tweaked SFXs

* fixed issues with light
* cleaned up the script
* script structure changed but the usage is the same

* Sound fixes
* Now the throwable item working as road flare is customizable
* Few tweaks and optimization to make it more JIP friendly

I made an script update for situations when you want to have a object placed from editor to work as a road flare