Embed PDB in DLL (for more descriptive errors)

[extraes]

Makes VS embed the PDB into the DLL for both release and debug configurations.
I saw this option for Chaos which really fucking needed it and figured BoneLib might be able to get some use out of it.
The only downsides are as follows:

• Probably slower exceptions (because the runtime would have to look up the line numbers)
• Builder's directory structure (incl. user account name, if built under there, like in the default "repos" folder) being known (not a problem if using Actions to build, but idk if BoneLib does that)
• Larger filesize (by probably not a lot)
• ermmmm... too useful? idk.