* add buildbot on Windows via Azure Pipeline
Use Py 3.7 instead of 3.6
* Add status badge for Azure Pipeline
* reuse original cmd files, couple build and test on Windows-CI
* Update Python version on .yml
Co-authored-by: Gheorghe-Teodor Bercea <gt.bercea@gmail.com>
Co-authored-by: Tian Jin <tjingrant@gmail.com>
Chun-Wei Chen