Nightly AV1/VP9 speed tests

- An independent script for code base Git synchronization.
- A configuration/build script for VP9.
- A configuration/build script for AV1.
- Nightly test includes AV1/VP9 profile=0/2.

Change-Id: Ic16357cef9473c28206203c75da6cefe65d220a7

scripts/sync_codebase.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+code_dir=$1
+
+cd $code_dir
+git checkout -q master
+git pull -q
+git log -1 --oneline