Implement EGL_ANGLE_image_d3d11_texture extension.  Images created with
this extension might not be renderable based on bind flags and resource
usage of the client provided texture in which case attaching them to a
framebuffer won't succeed.

The intended use case is to bind the front and back buffers of a swap
chain to GL textures that can be used for rendering in the case of the
back buffer and as a shader input for the front buffer.

Bug: chromium:939655
Change-Id: Ic3328e831880292217b88be84740740df6031fa6
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1646732
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>