[libuuid] Provide .pc pkg-config files

[traversaro]

Is your feature request related to a problem? Please describe.
The libuuid library on Unix system provides .pc files (see for https://packages.debian.org/jessie/amd64/uuid-dev/filelist), but the CMake-based build system maintained in vcpkg does not install them. This may be problematic because downstream build system that depend on libuuid may expect this .pc files to be available on Linux/macOS .

Proposed solution
We should modify the libuuid CMake-based build system maintained in vcpkg to emit .pc as done by the native libuuid build system.

Additional context