CMakeLists.txt: create an interface target and exports it
This way we can use cmake's find_package to find tango.idl. It creates the imported target tango-controls::tangoidl.
the .pc file has been moved to the newly created cmake dir for clarity
This way we can use cmake's find_package to find tango.idl. It creates the imported target tango-controls::tangoidl.
the .pc file has been moved to the newly created cmake dir for clarity