* [vcpkg docs] Change how documenting port functions works
Instead of using `##`, use comment blocks for documentation.
Also, add some minor docs and change RST -> MD
so we actually get docs generated.
* add CI stuff
* regenerate docs
* fix vcpkg_find_acquire_program to not use _execute_process
* [vcpkg] Add new function vcpkg_copy_tools
* [cpuinfo][czmq][nanomsg][uriparser] Use vcpkg_copy_tools
* [czmq] Clean even tools are not copied
[libsvm][zyre] Use vcpkg_copy_tools
* [vcpkg-copy-tools] Clean debug/bin
This should fix czmq build error
* [czmq] czmq does not have BUILD_TOOLS option
* [vcpkg] Split clean logic into another function
* [cpuinfo][czmq][nanomsg][uriparser] Fix calling of vcpkg_copy_tools
* [zyre] Fix regression error
* [vcpkg] Update try_remove_empty_directory
* [libsvm] Fix vcpkg_copy_tools call
