add back TagUI quiet mode with -quiet -q options - for more user scripting flexibility

[kensoh]

Quiet mode runs without output except for explicit output like echo, show, check steps and errors etc. The option was removed from documentation to streamline TagUI options. Raising issue to add back option for more script design flexibility.

[kensoh]

To use the -quiet / -q or -nobrowser / -n or input(s) options, users can type tagui command to see the details.

Or visit updated documentation here - https://tagui.readthedocs.io/en/latest/reference.html#run-options

[kensoh]

Closing issue since the latest packaged release TagUI v6.14 is out.

Release notes - https://github.com/kelaberetiv/TagUI/releases/tag/v6.14.0
To download v6.14 - https://tagui.readthedocs.io/en/latest/setup.html
Documentation - https://tagui.readthedocs.io/en/latest/index.html