[NUI.Scene3D] Add model to test glb format (#5067)

[NUI.Scene3D] Add model to test glb format (#5067)

* [NUI.Scene3D] Add model to test glb format

Check glb format file load well
+
Let this demo allow to load multiple camera

Signed-off-by: Eunki Hong <eunkiki.hong@samsung.com>
* Update test/Tizen.NUI.Scene3D.Sample/Scene3DSample.cs

Co-authored-by: Seoyeon2Kim <34738918+Seoyeon2Kim@users.noreply.github.com>
* Update Scene3DSample.cs

typo fix

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Signed-off-by: Eunki Hong <eunkiki.hong@samsung.com>
Co-authored-by: Eunki Hong <eunkiki.hong@samsung.com>
Co-authored-by: Seoyeon2Kim <34738918+Seoyeon2Kim@users.noreply.github.com>