bblayers.conf: Split meta-webos-ports layer to meta-luneos and meta-luneui

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
qt5-opengles2-test, qt5-plugin-generic-vboxtouch: move to meta-qt5

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
packagegroup-webos-ports-development: Add qtwebengine plugins and examples

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>