Add Native Interface EglConfig
This is based on work done by @balcy, i only rebased and put it into a single commit.
This seems to work now with qt 5.12 where the api seems to be able to eglGetProcAddress from qt platfroms, this allows us to enable gpu acceleration on hybris devices.
This fixes: https://gitlab.com/ubports/core/packaging/qtwebengine/-/issues/1
Edited by Ratchanan Srirattanamet