This should give an idea of the direction I want to take the
teambuilder in: a text editor, but with special features.
This neatly sidesteps a lot of UI questions, especially all the export
and input buttons, because the regular editing mode can be used to
import and export without anything fancy.
This also makes way for a better way to implement team/set comments:
comments are just invalid Pokémon in a team.
Considering all the individual panels start with `panel-`, this should
make it easier to find and in general be a more intuitive name.
All other tsx files will start with `panel-`, putting them together in
one place when sorting alphabetically.
