This change adds a CONTRIBUTING.md and some architectural documentation
for people new to submitting code to crosvm.
TEST=check the gittiles markdown
BUG=None
Change-Id: Ib792220ae50329413f487c5d87b29ad3b2f7c59c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2013213
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Commit-Queue: Stephen Barber <smbarber@chromium.org>
Auto-Submit: Zach Reizner <zachr@chromium.org>
