Add user profile subheader components + button group

[aaronxsu]

Overview

This PR:

• re-organizes the components subdirectory structure
• adds svg icons needed in user profile subheader and compare favorites button group
• customizes toggle button group and button group components based on react aria components
• creates examples of the user profile subheader and the compare favorites components using these customized base components

Tagging @philippschmitt here for design and styling care.

Checklist

• fixup! commits have been squashed
• CHANGELOG.md updated with summary of features or fixes, following
  Keep a Changelog guidelines
• README.md updated if necessary to reflect the changes
• Run ./scripts/format to lint, format, and fix the application source code.
• CI passes after rebase

Demo

Testing Instructions

• Go to the components page
• Make sure the button groups look and work well
• Make sure the user profile subheader section includes both mobile and desktop versions
• Use the Map/List toggle and make sure it works as expected

Resolves #648

[aaronxsu]

There may be variants of this in other places. This orange one implements the styles for the "Compare favorites" button group

[aaronxsu]

I think the button sizes are the same, so re-using the definitions from the styled buttons

[aaronxsu]

This isn't a brand new component. It's moved over from components into components/base with additional props like label, leftIcon, rightIcon, info, etc

[aaronxsu]

This is very similar to the styled Button component. There might be a chance to re-use the button component, and also parameterize groupedButtonStyles and buttonStyles as a function input?

[philippschmitt]

Looks great! I made a few small tweaks. The last commit, 6b7c5b9, changes the User profile subheader so that the icon size relates to the component size prop. Not sure if there's an easier way to achieve this but I took a stab at it.
I realized that the SVG icons I provided weren't responsive so I updated those as well in 771de82

[rachelekm]

This looks great! Good to go on the development side, I really like the components dir structure so far and the CompareFavoritesButton and UserProfileSubheader component props will be nice to have upfront 👍

[aaronxsu]

Thank you both for the reviews!

The styling changes look awesome ✨

I updated changelog and will merge after CI