Add iree_vm_value_{none,i8,i16} functions. (#7400)
Add iree_vm_value_{none,i8,i16} functions. (#7400)

Add iree_vm_value_{none,i8,i16} functions.
google/iree,iree-org/iree,google/iree,iree-org/iree,google/iree,iree-org/iree,iree-org/iree,google/iree,iree-org/iree,iree-org/iree,google/iree,iree-org/iree,google/iree,google/iree