Use polyhook with xmake package paradigm instead of custom cmakelists.txt

[bitonality]

Remove the custom logic in polyhook package inclusion. This unifies xmake packages dir for stable caching on CI runners and polyhook will now respect the xmake package dir setting.

• Adds a package level setting for whether or not to use the zydis submodule that's included in the polyhook2 repo
• Adds package settings for shared/static runtimes
• Adds the ability to reuse the zydis package within polyhook (this also respects zydis AND zycore dependency trees and versioning)

[bitonality]

Heads up, I want testing on some more machines before merging so please don't merge!

[narknon]

Resulted in proxy being unable to load the ue4ss DLL