Implement fenced divs to make a two-column html output.

[jashapiro]

I looked into making two column output via markdown. It looks like we can do that with "fenced divs" https://bookdown.org/yihui/rmarkdown-cookbook/multi-column.html

Basically we add a bunch of ::: {} elements where we want to create divs, and enclose ones we want side by side with ::::{style="display: flex;"}

We can try it at least!

Originally posted by @jashapiro in AlexsLemonade/scpcaTools#37 (comment)

[jashapiro]

I played around with this a bit today, and while it is easy to do from a structural point of view, it does introduce a lot of visual tweaking that would probably require some time with css to make look good. I don't know if we want to devote the design time to this at this stage, but we can circle back to it.

[jaclyn-taroni]

I'm going to take this out of the current Epic.

[sjspielman]

Noting I'm sending this issue over to scpca-nf, which is where the QC report now lives.