vcpkg_copy_tools: Handle versioned executable installed by CMake

Is your feature request related to a problem? Please describe.
Some CMake ports set the VERSION target for the installed executable, that on Linux as the effect that executable_name is not a real executable, but just a symlink to the real executable called executable_name-version (see the NAMELINK-related options in https://cmake.org/cmake/help/v3.17/command/install.html#installing-targets for more details).
The current form of vcpkg_copy_tools ignores the real executable called executable_name-version, and just copy in tools/${PORT} the symlink executable_name.

Proposed solution
I do not have a solution, I opened the issue so we can have a space where to discuss a possible solution.

Possible solutions include:

• Teach vcpkg_copy_tools to also find and install tools in the form toolsname-{version}
• Patch all the affected ports to avoid that they set the VERSION properties in the executables