ecore-wl2: Add more window types to Window Type enum

ecore-wl2: Add more window types to Window Type enum

Small patch which adds more window types to the Window Type enum.
These window types may be used by various compositors in different
ways. This patch does not add or change any functionality, it just
extends the window type enum to include the ability to specify other
types of windows.

'#divergence'

@feature

Signed-off-by: Chris Michael <cp.michael@samsung.com>