Add CI Adapter to support CoAP over TCP

Add CI Adapter to support CoAP over TCP

- add new transport adapter and flag for CoAP over TCP
- two interface was added in CA Layer for tcp connection
- https://wiki.iotivity.org/proposal_for_cloud_interface_in_iotivity

Change-Id: I75849e3f1250d7cc94de67766534ee19c308433d
Signed-off-by: hyuna0213.jo <hyuna0213.jo@samsung.com>
Signed-off-by: jihwan.seo <jihwan.seo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2240
Reviewed-by: Jaehong Jo <jaehong.jo@samsung.com>
Reviewed-by: Jon A. Cruz <jonc@osg.samsung.com>
Tested-by: Jon A. Cruz <jonc@osg.samsung.com>