[docs] Add 'Star Us on GitHub' link like on the website (#23981)

# Why

We decided to follow what we are doing on the website and add a 'Star Us
on GitHub' link.

# How

By adding a button li

[docs] Add 'Star Us on GitHub' link like on the website (#23981)

# Why

We decided to follow what we are doing on the website and add a 'Star Us
on GitHub' link.

# How

By adding a button like on the website.

I added a similar button which just links to the GitHub page, so it's a
bit redundant with current GitHub link (do we want to change URL to
something more specific? I am not sure if it makes sense to replace the
existing GitHub link as people want to go there even if they already
starred us and it feels incorrect to use this button for that).

Button is displayed on only desktop browser size (not enough space on
mobile and if we were to replace it with icon it would directly
duplicate the existing link).

# Test Plan

\-

# Checklist

- [x] Documentation is up to date to reflect these changes (eg:
https://docs.expo.dev and README.md).
- [x] Conforms with the [Documentation Writing Style
Guide](https://github.com/expo/expo/blob/main/guides/Expo%20Documentation%20Writing%20Style%20Guide.md)
- [x] This diff will work correctly for `npx expo prebuild` & EAS Build
(eg: updated a module plugin).

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[docs] migrate to new styleguide packages (#21557)

[docs] update Header and navigation Sidebar UIs, improve a11y (#21307)

[docs] add new Sidebar footer (#21020)

[docs] Add radix colors (#20397)

# Why

I updated the styleguide to use Radix colors. This PR adds the new
version of styleguide to the docs and changes all the color, shadow, and
border-radius

[docs] Add radix colors (#20397)

# Why

I updated the styleguide to use Radix colors. This PR adds the new
version of styleguide to the docs and changes all the color, shadow, and
border-radius values.

# How

- Very carefully finding + replacing values.
- Also used `tsc` to find spots where I missed.

# Test Plan

I looked through the docs for awhile and fixed up a lot of spots that
did not look correct. However, there may be more spots out there, so
please click through the website and report any color issues that appear
in this PR and not in production.

# Checklist

<!--
Please check the appropriate items below if they apply to your diff.
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- [x] Documentation is up to date to reflect these changes (eg:
https://docs.expo.dev and README.md).
- [x] Conforms with the [Documentation Writing Style
Guide](https://github.com/expo/expo/blob/main/guides/Expo%20Documentation%20Writing%20Style%20Guide.md)
- [x] This diff will work correctly for `expo prebuild` & EAS Build (eg:
updated a module plugin).

show more ...

[docs] update DocSearch component (#18788)

Co-authored-by: Jon Samp <[email protected]>

[docs] refactor navigation UI, switch to new Header (#18423)

[docs] update Styleguide, replace most of the icons (#17716)

[docs] redesign: new Error pages (#16989)

[docs] redesign: draft of Layout Header with some improvements (#16706)

Co-authored-by: Cedric van Putten <[email protected]>