Create repository for poiapp

Please create a repository to hold the poiapp application, currently hosted at:

https://github.com/AGLExport/genivi-navi-yelp-client

It has been stated in discussions at recent AGL F2F meetings that the application will no longer be maintained by upstream, but AGL intends to use it for at least the next release or two.  In order to facilitate planned fixes and improvements by the community, it seems prudent to host it on AGL Gerrit.