CL: Add additional state getter for CLImage Much of the image state is validated by the frontend, and as such add corresponding getters for the state. - The row and slice sizes are updated to account for zero values - New getters for width,height,depth and array size are added Bug: angleproject:365694588 Change-Id: I3398a14a3bb2aff078290423d6963e646f3c32df Signed-off-by: Gowtham Tammana <g.tammana@samsung.com> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5854003 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com>