Add new end2end test where the source for EGL images
is an Android Hardware Buffer

Bug: angleproject:4810
Tests: angle_end2end_tests --gtest_filter=ImageTest.SourceAHBTarget*
Change-Id: I20f303c6ad839ac2e65d407cfe3813a8be4c1cfa
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2231884
Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>