Add example for using a build-time included plugin to storybook

[cmdcolin]

The storybook has an example of runtime-including a plugin but it is actually probably more common to use build-time plugins, so I added an example of that here

This adds a devDependency on jbrowse-plugin-ucsc to use as an example

[cmdcolin]

appears to have some issues with a postinstall step, maybe put into draft

[cmdcolin]

this did work locally though which was interesting

[cmdcolin]

This may have to be closed if we can't resolve the build issue/CI. I think it's worthwhile to make sure that we document how to use build-time plugins, and having an example like this would be good but it causes the CI failure. Any ideas? something related to plugin postinstall script

[elliothershberg]

Hmm, yeah that would be good to have. I can try taking a look at this later.

[cmdcolin]

This now uses a source code comment to describe how to use build time plugins, rather than provide an actual example that uses build time plugins

[codecov]

Codecov Report

Merging #1862 (2c19a3c) into main (4d42689) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1862   +/-   ##
=======================================
  Coverage   58.80%   58.80%           
=======================================
  Files         460      460           
  Lines       21735    21735           
  Branches     5198     5198           
=======================================
  Hits        12781    12781           
  Misses       8653     8653           
  Partials      301      301           

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[cmdcolin]

this pr was pared down to basically just a comment now