Add experimental support for skqp

skqp stands for SKIA Quality Program conformance tests. Basically, it has sets of rendering tests and unit tests to ensure that SKIA is meeting its design specifications on a specific device.

Add skqp-runner binary to execute skqp tests.

Signed-off-by: Helen Koike helen.koike@collabora.com

See https://gitlab.freedesktop.org/anholt/deqp-runner/-/issues/33