This patch contains further work on several areas for the GMM layer,
like fixes and improvements in existing primitives, initial FSM
implementation, initial Tx and Rx of some GMM messages, etc.
Related: OS#5501
Change-Id: I212053b3a3f27ef7d63503c3d5ef08453b2d2056
The library itself only contains a bunch of boilerplate to build the
library and have usual initialization, logging, prim APIs.
There's not yet much logic specific in it yet, but will make next
commits easier to review.
Related: OS#5501
Change-Id: Ie098576954a55e5046c2463390ab7133511c1eb3