Add host, port arguments for dagu server command

[yottahmd]

example:

dagu server --host=somehost --port=8000

[yottahmd]

done

[pencilcheck]

does this work for dagu scheduler as well??

[yottahmd]

@pencilcheck No, it does not. The dagu scheduler command only executes the scheduler process and does not start the web server for admin web UI, so it does not have the host and port arguments. dagu scheduler and dagu server processes need to be running separately.

[pencilcheck]

got it