Add `$schema` to `cgmanifest.json` (#10955)
Add `$schema` to `cgmanifest.json` (#10955)

Co-authored-by: Jamie Magee <7b2da138cf99e3b2eaf2581c0b7def57b981d868@microsoft.com>
killerantz/HoloToolkit-Unity,killerantz/HoloToolkit-Unity,killerantz/HoloToolkit-Unity,killerantz/HoloToolkit-Unity