Add dschinazi to //net/quic/OWNERS

Change-Id: If72b48f88132780f79f90c29117d240e099fc2c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2079149
Commit-Queue: David Schinazi <dschinazi@chromium.org>
Commit-Queue: Nick Harper <nharper@chromium.org>
Auto-Submit: David Schinazi <dschinazi@chromium.org>
Reviewed-by: Nick Harper <nharper@chromium.org>
Cr-Commit-Position: refs/heads/master@{#745238}

net/quic/OWNERS

+dschinazi@chromium.org
 nharper@chromium.org
 rch@chromium.org
 zhongyi@chromium.org