Add parsing of all options in jfmt

[xexyl]

Updated usage message.

Added -m max_depth option. This was also added to the json_util_README.md document.

The option parsing for jfmt should be complete.

Updated version to 0.0.1.

The other tools will probably take more work to get the options parsed but this one was simple as the code already existed.

[lcn2]

Thanks 🙏 @xexyl

Back to traveling in Canada 🇨🇦

[xexyl]

Thanks 🙏 @xexyl

Happy to help.

Back to traveling in Canada 🇨🇦

Safe travels! And remember: the Road Goes Ever On!

I'm off to do other things but hopefully I can get another tool option parsing done soon. Soon most likely but whether that's tomorrow or not I don't know.

[xexyl]

I am going to try resting now and then I hope to look at one of the other tools: whichever one seems like it will be quicker to implement the options.

Probably it will be jval because some of the options for that tool are also shared in jnamval.

But I don't know if I will finish the parsing or not: some new code will be required I think. Depends on how much time and energy I have!

Hope you're sleeping well or if you're awake that you're doing well! Well okay I hope you're doing well even if you're sleeping but you know what I mean!

Hopefully a commit in a few hours if not before that!