Add detonation time expression

[Asleeepp]

Description

Adds the detonation time expression, where you can set the fuse ticks of a creeper or primed TNT. You can also get the max fuse time of a Creeper (you can't with TNT)

I've also deleted the Creeper Max Fuse Ticks expression, as this replaces it. (it was apparently broken anyway)

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Target Minecraft Versions: any Requirements: none Related Issues: none