docs: add favicon and brandImage

[markov00]

Summary

I've moved the storybook icon to be picked up as a favicon instead of including it into the head tag.
This just prevents Storybook from loading the logo on every page.

I've also changed the brandImage to use our logo

[codecov-io]

Codecov Report

Merging #1022 (87c997d) into master (9f9e5c2) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1022      +/-   ##
==========================================
- Coverage   72.53%   72.52%   -0.01%     
==========================================
  Files         363      363              
  Lines       11184    11183       -1     
  Branches     2437     2436       -1     
==========================================
- Hits         8112     8111       -1     
  Misses       3058     3058              
  Partials       14       14              

Flag	Coverage Δ
unittests	72.52% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...rc/chart_types/xy_chart/renderer/dom/crosshair.tsx	70.17% <0.00%> (-0.52%)	⬇️
src/components/brush/brush.tsx	78.18% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9f9e5c2...73616f1. Read the comment docs.

[nickofthyme]

🎉

[rshen91]

Nice!

[elizabetdev]

LGTM! 🥳 🎉

[markov00]

🎉 This PR is included in version 24.6.0 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

Your semantic-release bot 📦🚀