COMPMID-1737: Add support for install_dir

Note: Only ComputeLibrary files get copied over (Stub CL / GLES drivers don't, nor are the 3rdparty includes)
utils/ files are not copied either (They're not part of the core library)

Change-Id: I55e01c0ba4a5f7e649877fcdd11fdb0a51071b18
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/156339
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: bsgcomp <bsgcomp@arm.com>
4 files changed