Versioning feature implementation.

Versioning feature implementation.

1. Introduce in new Content Type application/vnd.ocf+cbor
2. Introduce in option headers Accept Version and Content-Format Version
3. Handle versioning at CA and RI layers
4. Expose the result of version handling to application layer
5. Add test codes at CA, RI and application layers

Bug: https://jira.iotivity.org/browse/IOT-1735
Change-Id: I9924881f6233b4c4f5af9d50098cd48ef258a753
Signed-off-by: Ziran Sun <ziran.sun@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/16505
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Abhishek Sharma <ce.abhishek@samsung.com>
Reviewed-by: jihwan seo <jihwan.seo@samsung.com>