cookbook: Figure numbers should be defined programatically

[jdhoffa]

And enumeration should restart on every chapter

[jdhoffa]

Unless it's in physical print (leather-bound)

[jacobvjk]

it seems like using bookdown is the standard answer to this

• https://bookdown.org/yihui/rmarkdown-cookbook/figure-number.html
• https://stackoverflow.com/questions/51730846/auto-numbering-of-figure-and-table-captions-for-html-output-in-r-markdown

I wonder if that's worth it. Also notice that there are references to certain figure numbers in the text, so these would have to have variable references too.

[jdhoffa]

Not worth it!! Closing without action.