This diff adds a Powershell script which takes the build artifacts from
a windows cross build as an input and run some basic tests on it.
This version is simple enough to run on any Windows 10 teamcity agent
and requires no additional dependency nor VCS checkout. More tests can
be added later as needed. The avalanche test
processor_tests/poll_inflight_timeout will hang forever and needs
further investigation, it is disabled for now.