Explosives - Improve AT/SLAM, Frag from Claymore and Bounding Mines

[mrschick]

When merged this pull request will:

• Reduce the trigger mass of the M15 AT Mine to a realistic value of the M603 pressure fuze:
  Previously it would only trigger at >7t, keeping Wiesel Tankettes (~4t) completely safe. Now it will detonate under any vehicle heavier (>300kg) than the vanilla quad bike (280kg).
• Improve the M4 SLAM mine's damage dealt to soft and hard vehicles:
  Previously it wouldn't destroy cars and barely damage trucks (while killing the crew only in side-attack mode). Now it can reliably destroy them in both bottom and side-attacks and cook off tanks (40mm penetration is more than enough for MBT bottom armour).
  Had to change the fuse type from proximity to a 0.5m vertical "tripwire", in order to make them effective against moving vehicles. The purely "magnetic" proxy fuse would often trigger below a tank's cannon / right in front of its hull (especially at slow speed), dealing no damage.
  Implemented Editor and Zeus placed SLAM Bottom Attack Mines being pointed upwards, just like player-placed ones.
• Make Claymore mines less destructive towards buildings while adding ACE Frag effects to compensate:
  Works well, front-facing lethality is not diminished, while added frag adds light injury potential when standing to the sides or rear (previously standing right behind it would deal no damage at all).
• Enable Frag on APERS VS-50 and Bounding mines:
  Also reduced damage dealt by the Bounding mine to prevent it from insta-killing light vehicles from 20m away, lethality against infantry within 30m is unchanged.

[mrschick]

@BrettMayson FYI, the duplicate class definition that I fixed with 581a62e was detected by the PR's pipeline and threw an error, but is not logged as an error by HEMTT v1.12.4.

[lambdatiger]

Noticed you're basing your PR from this PR #9728. Sorry if I threw a wrench in any of your work, there were some issues with using init event handlers until we get getShotInfo. I fell back onto the old event driven system, but the final effect shouldn't differ. The changes you made to addons/frag/CfgAmmoFragParameters.hpp shouldn't conflict, but I thought I should give you a heads up that you might have to fight another merge conflict.

Also question, should your WIP claymore produce some of the 700 fragments spread in every direction, or just forward?

[mrschick]

Thanks for the heads-up. Don't worry about it, I just need your excellent changes as a base to test explosive improvements, merge conflicts are only a minor hurdle while this PR is WIP anyway 👍🏻

My goal for the Claymore is to reduce its damage against buildings (without tweaking overall damage too much) and ideally get it to generate a realistic frag pattern, which includes a bit of shrapnel to its rear, since it has a rear danger zone of <1m right now.
Not completely sure how to set the gurney value to interact with explosionAngle to throw shrapnel mainly "forward" of the mine.