[BD-46] docs: updated docs site navigation

[PKulkoRaccoonGang]

Description

Implement left and right sidebars from the design above.
Figma design

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Paragon site documentation

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.33 🎉

Comparison is base (2a866c8) 90.73% compared to head (46f4c7a) 91.07%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1803      +/-   ##
==========================================
+ Coverage   90.73%   91.07%   +0.33%     
==========================================
  Files         233      234       +1     
  Lines        4082     4122      +40     
  Branches      966      981      +15     
==========================================
+ Hits         3704     3754      +50     
+ Misses        371      361      -10     
  Partials        7        7              

see 31 files with indirect coverage changes

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[adamstankiewicz]

@PKulkoRaccoonGang @viktorrusakov This is looking great. I shared the deploy preview around to a couple engineers internally to get their feedback as well. One high-level feedback item is that the re-design loses the search bar on the home page since its now only in the sidebar navigation on child pages.

In talking to Kayva (designer), we would like to add the search bar back to the header persistent across the site, but also keep the search bar in the sidebar nav on the child pages.

[viktorrusakov]

@PKulkoRaccoonGang I see you've also added Container Width option to settings Sheet, but it has different styling from language selector

should probably something like this

[viktorrusakov]

@PKulkoRaccoonGang also, when I open the menu popup locally, I get couple of prop types warnings, could you please take a look at them

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🎉 This PR is included in version 20.32.1 🎉

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[edx-semantic-release]

🎉 This PR is included in version 21.0.0-alpha.23 🎉

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