ProcessExecutor might get stuck on Windows

Current execution of external process on Windows might lead to following issues, causing process deadlock:

1/ Process stdin is not closed if no longer needed
2/ Process stdout and stderr never reach EOF

This behavior is observed when a .bat file file is executed on Windows. This behavior is caused by missing file descriptors to underlying process spawned by bat file.

Implementation note: There are two ways how to resolve the issue.

• read output stream and consider them finished if specific message is encountered
• unwrap bat execution and execute directly underlying command