[onert-micro] Create Makefile for building onert-micro for TizenRT

[Torrero]

Let's create Makefile for building onert-micro for TizenRT.

I consider to push it to the new folder: https://github.com/Samsung/ONE/tree/master/onert-micro/examples/TizenRT.

@chunseoklee , @SlavikMIPT , @stamalakhov could you provide your opinion, please.