feat: memoize components to prevent child re-renders (vercel#45)

* chore(markdown): memoize components to prevent child re-renders

This PR memoizes Markdown components to prevent re-renders in children. I'll include a video.

Start as draft.

Note: This fix doesn't solve `anchor` because of how `hardern-react-markdown` works.

* changeset

* Draft section

* Revert "Draft section"

This reverts commit df4c3ac.

* fix: remove unused 'node' prop from MemoLi component

* fix imports

* feat: add ImageComponent to components export and update memoization for Markdown elements

- Introduced `ImageComponent` for handling images in Markdown.
- Updated memoization for various Markdown elements to improve performance.
- Cleaned up import statements for consistency.

* fix: update image component to use MemoImg for improved performance

- Replaced `ImageComponent` with `MemoImg` in the components export.
- This change enhances memoization for image handling in Markdown.

* Change streamdown version and memoize components

Updated streamdown version from patch to minor and added feature to memoize components.

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Co-authored-by: Hayden Bleasel <hello@haydenbleasel.com>

Author: FranciscoMoretti

.changeset/real-donkeys-stare.md

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+---
+"streamdown": minor
+---
+
+feat: memoize components to prevent child re-renders