[TM-ONLY] experimental native harddelete ref scanner

[Absolucy]

behold, horrors beyond comprehension: a native refscanner can that find what's holding a ref during a hard delete in milliseconds rather than minutes.

detailed info goes to refscanner.log

dll source code bc im too lazy to make a github repo at the moment: datum_refscanner.zip

[Absolucy]

converting to draft just to prevent accidental merges lol

[XeonMations]

currently hardcoded for BYOND 516.1675 on Linux (or 516.1669 on Windows)

1677

[Absolucy]

@XeonMations not hardcoded anymore actually anyways

i just never update descriptions

[github-actions]

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