Adding JsonSchema parser implementation for simulator and Updating Raml Parser.

Adding JsonSchema parser implementation for simulator and Updating Raml Parser.

1. source code for Json Schema parsing logic.
2. updating Raml Parser to read all child resources, types and Traits.
3. added smart pointer implemetation for Raml Parser.

Change-Id: I3565b97e8d8ef78f98841469a17230e64112370f
Signed-off-by: Abitha Shankar <abitha.s@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2479
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>