[WNMGDS-3160] Updates docs site color guidance

[kim-cmsds]

Summary

• Updates the "theme colors" page on the docs site to programmatically display information about certain color categories (e.g. "primary" or "base")
• Jira Ticket
• There's a function that is looping over the color tokens multiple times to determine the information that designs will want to see (e.g. hexcode, css variable name, the name of the color in figma, and component usage). There's probably a better way of accomplishing this information gathering, so feel free to leave feedback on that front.

This work can also be reviewed at https://cmsgov.github.io/design-system/branch/kcn/3160/update-color-guidance/foundation/theme-colors/?theme=core

@sophia-cmsds and @andream-cmsds I'm particularly interested in addressing any feedback you might have! We can talk more about ways to define specific commentary about each color category. You'll find it's generic now, but that can be addressed.

How to test

1. Pull down the branch locally and take a look at http://localhost:8000/foundation/theme-colors/
2. Compare what's there with the design found in the JIRA ticket

Checklist

• Prefixed the PR title with the Jira ticket number as [WNMGDS-####] Title or [NO-TICKET] if this is unticketed work.
• Selected appropriate Type (only one) label for this PR, if it is a breaking change, label should only be Type: Breaking
• Selected appropriate Impacts, multiple can be selected.
• Selected appropriate release milestone

If this is a change to documentation:

• Checked for spelling and grammatical errors

[sophia-cmsds]

This looks great! In a perfect world there'd be a way for Andrea or I to be able to edit the content (specifically "used in") without triggering a whole release process but either way this is a vast improvement over the existing.

Also I know I owe you the feedback link still!

[andream-cmsds]

This looks amazing! One thing I noticed is off is that for the HealthCare theme, the +/- on the accordions is on the far right, but in our Figma files, they are on the left of the accordion heading. (Attaching a Figma screenshot)