server: ci: windows build and tests (#5968)

* server: ci: windows build and tests

* server: ci: remove tmp push branch

* server: ci: EOF EOL

* Use builti

Co-authored-by: Jared Van Bortel <cebtenzzre@gmail.com>

* server: tests: server graceful shutdown, then kill, then hard kill

* server: tests: remove python2 unicode string

* server: tests: remove wrong comment on server starting,  close_fds is always true

* server: tests: server kill, if pid exists

* server: tests: remove dependency to killall

* server: tests: ci windows: pid exists better handling

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Co-authored-by: Jared Van Bortel <cebtenzzre@gmail.com>