Configure -stdout and -stderr options for Windows start script

Desired Behavior

• The Windows start script for the JobScheduler Engine makes use of the options -stdout and -stderr with file paths as stated in the main issue.
• The Unix start script for the JobScheduler Engine is modified to separate output to stdout to a file scheduler.stdout.log and output to stderr to a file scheduler.stderr.log accordingly.
• The file scheduler.out is not used any longer.

Maintainer Notes

• This feature is provided without additional command line options.
• Output to stdout/stderr is collected in a single file ./logs/scheduler.out for Windows and Unix, see JS-1194