Enhanced formatting of command-line parameters for JBang

[wfouche]

The Jbang command-line is now formatted to more readable when --cli-debug is enabled:

JBang command-line parameters:
    jbang.cmd
    run
    --java
      21
    --runtime-option
      -Dpython.console.encoding=UTF-8
    --deps
      io.leego:banana:2.1.0
    --main
      org.python.util.jython
    org.python:jython-slim:2.7.4
    examples\banner.py

and not like this:

[jbang.cmd, run, --java, 21, --runtime-option, -Dpython.console.encoding=UTF-8, --deps, io.leego:banana:2.1.0, --main, org.python.util.jython, org.python:jython-slim:2.7.4, jython-jbang-catalog\examples\banner.py]
['jython-jbang-catalog\\examples\\banner.py']

[wfouche]

@jeff5 , this is a no brainer. It just makes the command-line easier to comprehend.

Please review and merge.

[wfouche]

Dropped. Will resubmit.