Add `SponsorLogos` section above footer

[brandonmcconnell]

Describe your changes

This PR adds a Featured Sponsors section to the bottom above the footer bar

The added logo gris is…

• naturally responsive
• centered (originally started with CSS grid but opted for flexbox for native centering on the last row)
• accessible (titles and alt text added where applicable)
• dynamic
  • href linking is optional
  • src image prop can be internal image (from ../images/sponsor-logos/) or external (http...)
  • includes transition to highlight hovered logo and show sponsor name (see screen recording below)

Link to issue this resolves

Fixes #33

Screenshot of changes(if relevant)

https://user-images.githubusercontent.com/5913254/195210335-259c5528-1c40-4244-b67a-7042d62eef3a.mov

• [x] The title should be something descriptive about what your changes do. (It will default to whatever you put as your commit message.)

This description should include :

• [x] A short summary of your changes
• [x] A link to the issue that relates to these changes
• [x] A screenshot of the changes if possible!

[vercel[bot]]

Someone is attempting to deploy a commit to a Personal Account owned by @brittanyjoiner15 on Vercel.

@brittanyjoiner15 first needs to authorize it.

[brittanyjoiner15]

@brandonmcconnell i see you've made changes in here! Is this ready for review? If so, can you resolve the merge conflicts and then let me know and ill give it another look and hopefully merge it!

[brandonmcconnell]

@brittanyjoiner15 Not quite yet! It's almost completely there, but I still haven't been able to figure out why the site freezes when the theme switcher is toggled. I'll leave an update here by Monday (if not sooner), if that's alright.

[brittanyjoiner15]

@brandonmcconnell no worries! Monday would be great!