Explosives - Minor refactor

[johnb432]

When merged this pull request will:

• Code cleanup & optimisation.
• Eliminate race condition for getting IED cellphone code.
• Cache detonators.
• Check variable types in public functions.
• Remove ACE_Explosives_fnc_detonateExplosiveAll, as it's just a forEach loop.
• Improve documentation.
• Address ACE3 Feature Requests #3594 (comment) by adding ace_explosives_defuseStart and adding missing documentation for ace_explosives_defuse and ace_explosives_explodeOnDefuse.

• Fully test all features.

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[PabstMirror]

It really doesn't matter but I think fuze is correct here
it's something like:

• fuse - like the classic burning/sparking rope on a stick of dynamite
• fuze - something more complicated like a sensor or timer that triggers an explosive

[johnb432]

It's AE vs BE shenanigans, but seeing as we have fuse everywhere else, I figured I would bring it in line, despite being BE.