Add the unity exploit patch into KSPCF

[Clayell]

Provide a description of the KSP bug or improvement
Not sure if this is feasible, but I wonder if it would be possible to integrate the patch for the recent unity code execution exploit into KSPCF. I doubt any modder would be stupid enough to try to exploit the bug, but it could happen. Given that KSPCF is already known for patching KSP bugs, I don't think it would be too far of a reach for it to patch a security exploit?

[gotmachine]

Gave a quick look.

From a practical PoV, integrating this in KSPCF would require bundling the 250 Mb patcher with it (Maybe even both the windows and OSX patchers, so closer to 500 MB) and doing a hacky mess to kill KSP, run the patcher and re-launch KSP. This being said, after taking a look at the unity provided patcher source, it wouldn't be too difficult to put together our own lightweight / targeted version of it.

Windows is the only platform where this vulnerability has some chance of actually being leveraged, and Windows Defender has implemented a mitigation for it. There are literally thousands of similar severity exploits discovered each year, most of them are never patched.

I personally won't be working on this unless we hear about this exploit being actually used by something harmful.