Helper for the POE::Wheel::Run for easy controlling logging of stdout/err as well as restarting with backoff.

Changes for 0.1.0 - 2024-01-27

• add support for PID files created by child procs for their child proc
• + add new option pid_file
• + add pids method for returning child pid and the pid from the PID file
• + add pid_from_pid_file for returning the PID from the PID file
• + reads PID file via File::Slurp, so new depend
• add kill method for killing the procs