Add `filter` flag to run_testlist so that tests can be filtered by wildcard or regex.
Update `run_testlist.sh` and `run_testlist.bat` to automatically use the vk-master.txt test list.

Change-Id: I94ef1d2e9220f18bdf50555db8c291b3736ec3f3
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/42089Reviewed-by: Paul Thomson <paulthomson@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Ben Clayton <bclayton@google.com>