Jam Tweaks for 1.6

This is inspired by DorrajD's Jam Tweaks mod, but updated to include the new fields added by the 1. 6 update.

To quote the old mod description since I share the same sentiment:

I really like the gun jam animations, I think they look cool, and add a lot to the combat.

Fighting bloodsuckers only for your shotgun to jam as it's eating your face makes the game feel just a bit more immersive and thrilling.

However, there's one problem, if you keep up with your guns, they never jam! By default, most guns only have a chance to jam at a minimum of 70 60%-80% condition! If you keep up with the repairs on your stuff, you will genuinely never see these really cool animations until you maybe just happen to pick up and use a random gun off a dead stalker.

So I changed all of the minimum numbers to 100%! Now, these are still based off chance. Meaning even though I increased the minimum number, the chance of you jamming is still very small. Right after repairing, you should not get any jams. But once you fire some shots and get in the nitty gritty swampy mud of the zone, there is now a chance you will jam! I both think this makes more sense (there is no way anyone can actually keep proper complete maintenance of their guns in the zone with all the blood and mud and rain radiation everywhere all the time), and adds just a bit more depth to firefights where a jam could happen at inopportune moments.

The zone is not forgiving!