Add/verify support for signing dtrace scripts

[clairernovotny]

https://techcommunity.microsoft.com/t5/Windows-Kernel-Internals/DTrace-on-Windows/ba-p/362902

Trying to get more details, but the blog post indicates it's done similar to PowerShell, so I assume it's a SIP somewhere. Might already work if you have the right SIP installed. Otherwise, might need local updates.