This patch does the following -
1. Expose EGL_KHR_image_gl_colorspace only if the underlying
   ICD supports VK_KHR_image_format_list extension
2. Create VkImageViews from EGLimage's format
3. Fix bugs in ImageTest colorspace tests

Bug: angleproject:3756
Bug: angleproject:5281
Test: angle_end2end_tests.exe
          --gtest_filter=ImageTest*Colorspace*Vulkan
Change-Id: I618ae009e83d0a6b27a0a50165f736784717e404
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2523670
Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>