Add scaffolding for tizen native example app

Add scaffolding for tizen native example app

This PR adds an anchor point for tizen native example app.
More specifically contains a tizen wearable widget that prints out 'hello world'
I am planning to build a tizen wearable app that trains user drawing labeled
with a specific unicode character but subjected to change at the moment.

Self evaluation:

Build test: [X]Passed [ ]Failed [ ]Skipped
Run test: [X]Passed [ ]Failed [ ]Skipped

Signed-off-by: Jihoon Lee <jhoon.it.lee@samsung.com>