[Example] Add edc layout to the scaffolding

[Example] Add edc layout to the scaffolding

**Changes proposed in this PR:**
- Add main.edc
- Add view.[ch]
- Add data.h
- Change main initiation to use view function
- Move data definitions to data.h

**Self evaluation:**
1. Build test: [X]Passed [ ]Failed [ ]Skipped
2. Run test: [X]Passed [ ]Failed [ ]Skipped

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