Size2D get error fix
- add Size's set/get Property
- fix compile error for NUI Ubuntu build with VS-Code (please use NUISamplesUbuntu)
Conflicts:
NUISamples/NUISamples/NUISamples.TizenTV/examples/Main.cs
NUISamples/NUISamples/NUISamples.TizenTV/examples/date-picker.cs
NUISamples/NUISamples/NUISamples.TizenTV/examples/gc-test.cs
NUISamples/NUISamples/NUISamples.TizenTV/examples/image-view.cs
Change-Id: Id9e64b0915b32e2470104403f62719fe75e84aa7
Signed-off-by: dongsug.song <dongsug.song@samsung.com>