Webdev remains in detached state when quitting jaspr serve on windows

[schultek]

This is related to https://github.com/dart-lang/sdk/issues/49234

There seems to be no proper way currently to softly terminate child processes. Using process.kill() would forcefully terminate a child process and potentially leave files and sockets broken.

When this is resolved, a solution should be implemented here: https://github.com/schultek/jaspr/blob/b6340564eda0166ae81dba8e8bbc961bb2fff79c/packages/jaspr/lib/src/commands/command.dart#L24-L28