fix(toolkit): Markdown improvements rendering tables and code snippets

[knajjars]

Thank you for contributing to the Cohere Toolkit!

• Use our custom Cohere brand colors for rendering code snippets.
• Temporarily disable the iFrame preview due to issues rendering with other markdowns components

AI Description

This pull request makes changes to the coral_web interface, including:

• Updates to the package.json and package-lock.json files, removing the highlight.js dependency.
• Modifications to the AgentsSidePanel.tsx and Header.tsx components, adding and utilizing the setEditAgentPanelOpen and setAgentsSidePanelOpen functions for improved side panel handling.
• Changes to the DataTable.tsx component, updating the import statements for Icon and Text components.
• Updates to the Markdown.tsx component, including:
  • Adding useMemo and UrlTransform imports.
  • Removing ComponentPropsWithoutRef import.
  • Modifying the getActiveMarkdownPlugins function to include the renderRemarkTags plugin.
  • Adjusting styling for the MarkdownTextProps type.
  • Updating the component rendering logic to use useMemo for memoization.
• Introduction of a new directives/tag.ts file, providing the renderRemarkTags plugin for rendering :mark directives in connector tags.
• Styling updates in code-style.css and main.css, including:
  • Defining styles for code blocks with the .hljs class.
  • Modifying styles for the .dark class, including colors for various elements within code blocks.
• A fix in preview.ts to address issues with Markdown rendering by returning the original content.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

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  Coverage        ?   85.55%           
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  Files           ?      156           
  Lines           ?     5816           
  Branches        ?        0           
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  Hits            ?     4976           
  Misses          ?      840           
  Partials        ?        0           

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[wujessica]

ty!!