Proposed changes

[dg0yt]

You may pick parts as you like. I didn't test more than vcpkg install for x64-linux and x64-linux-dynamic.

• debug/include is never written.
• vcpkg wants to have all tools to be in tools, even on linux. I don't like it, but it is a fact.
• The CMake config may just assumed that everything is installed correctly. Otherwise it is a port bug, not a "package not found".
• The cmake config file uses the package name pattern for case-insensitive matches. CMake will set <requested-name>_FOUND. I dropped explicit setting of directx-dxc_FOUND.
• Just generic target properties.
• Directly set DIRECTX_DXC_TOOL as a cache variable. Doesn't hurt, and user might override it to a host path for cross builds.
• Unchanged: The variable name pattern of DIRECTX_DXC_TOOL neither matches the former explicit directx-dxc_FOUND nor the general <requested-name>_FOUND (unless the user asked for find_package(DIRECTX_DXC)).
• On linux, the libs use libz.so.1. With port zlib installed, this will resolve to that port's binary instead of a system binary. To avoid subtle effects from installation order, I suggest to make zlib an explicit dependency at least for dynamic triplets.