Protobuf for node configuration

Node configuration is added as part E2APv1.1 and E2APv2.0.
gNB and eNB will have their respective node configuration.

Issue-ID: RIC-722
Signed-off-by: subhash kumar singh <subh.singh@samsung.com>
Change-Id: I07db06c1084f2ae85f9063f66588da548521483a
17 files changed