-------------------------
* Add draft A1 Mediator API definition
* Use E2 Manager API definition dated 2 May 2019, with tag modifications
* Adjust group IDs and packages for name O-RAN-SC; drop ORAN-OSC
* Add ANR API spec and client code generator
-------------------------
* Add draft A1 Mediator API definition
* Use E2 Manager API definition dated 2 May 2019, with tag modifications
* Adjust group IDs and packages for name O-RAN-SC; drop ORAN-OSC
* Add ANR API spec and client code generator