[misc]: Keyboard, a11y, and misc things

[moonmeister]

1. Update search to use named matcher for metadata eslint to be more robust and make eslint happy
2. Make default highlight color use theme color
3. Move the MDX Headings implementation to its own file and clean up the implementation to work with mdx provided id
   
4. Add a highlight and animation to linked header
   https://github.com/user-attachments/assets/ecb6ebe4-f097-4bb3-b9ba-96421cd6289c
5. clean up icon implementation and add screen reader text
6. add some not just grey hover effects on the home page buttons
   
7. Add recommended plugins and their configs in vscode workspace config
8. eslint cleanup

[headless-platform-by-wp-engine]

Check out the recent updates to your Headless Platform preview environment:

App	Environment	URL	Build
faustjs.org	preview-env-keboard-a11y-things	https://hh…wered.com	✅ (logs)

Learn more about preview environments in our documentation.

[headless-platform-by-wp-engine]

Check out the recent updates to your Headless Platform preview environment:

App	Environment	URL	Build
faustjs.org	preview-env-keboard-a11y-things	https://hh…wered.com	✅ (logs)

Learn more about preview environments in our documentation.

[headless-platform-by-wp-engine]

Check out the recent updates to your Headless Platform preview environment:

App	Environment	URL	Build
faustjs.org	preview-env-keboard-a11y-things	https://hh…wered.com	✅ (logs)

Learn more about preview environments in our documentation.

[headless-platform-by-wp-engine]

Check out the recent updates to your Headless Platform preview environment:

App	Environment	URL	Build
faustjs.org	preview-env-keboard-a11y-things	https://hh…wered.com	✅ (logs)

Learn more about preview environments in our documentation.

[headless-platform-by-wp-engine]

Check out the recent updates to your Headless Platform preview environment:

App	Environment	URL	Build
faustjs.org	preview-env-keboard-a11y-things	N/A	❌ (logs)

Learn more about preview environments in our documentation.

[headless-platform-by-wp-engine]

Check out the recent updates to your Headless Platform preview environment:

App	Environment	URL	Build
faustjs.org	preview-env-keboard-a11y-things	https://hh…wered.com	✅ (logs)

Learn more about preview environments in our documentation.

[headless-platform-by-wp-engine]

Check out the recent updates to your Headless Platform preview environment:

App	Environment	URL	Build
faustjs.org	preview-env-keboard-a11y-things	https://hh…wered.com	✅ (logs)

Learn more about preview environments in our documentation.