Jest Addon Improvment on the panel component.

Regarding @storybook/addon-jest, I would like to suggest two improvements:

1. The Panel component on ./addons/jest/src/components/Panel.tsx, allowing for contraction when multiple Test Result Panels are in display, this would allow the user to visualize only the test results relevant for his task in hand, this would result in an Accordion-like feel when you have test results from multiple files.
2. On the same file but in the SuiteTotals component (or probably make a separate component for it), allow to display the file name from which the tests result where gather.

Are you able to assist to bring the feature to reality? Yes I can.

Additional context Add any other context or screenshots about the feature request here.

This is a screenshot of what I did inject stuff in to the developer tools DOM inspector with some corrections done on a bitmap editor. But more or less I am proposing something like this.

[shilman]

@ekiim please take a look at the section on code contributions and hopefully that will help you test it: https://github.com/storybookjs/storybook/pull/14931/files

If you run into any issues, please grab me on Discord https://disord.gg/storybook in the #contributing channel!

[domyen]

This looks cool, send a PR with the changes and we can tweak the UI there.

The child tabs shouldn’t be expandable/collapsible (see screenshot below)