Add support for tables in documentation

[bveeramani]

We need to add proper styling and support for tables in documentation pages.

What to build:
Tables should render nicely in the documentation with proper styling. This likely involves adding Markdoc configuration and CSS.

Where to work:

• Check src/luma/app/markdoc/ directory - this is where Markdoc rendering is configured
• You may need to add a custom table component in src/luma/app/components/
• Or add CSS styling for standard HTML tables

What tables need:

• Clean, readable styling with borders and padding
• Responsive design (maybe horizontal scrolling on mobile for wide tables)
• Alternating row colors or hover states for better readability
• Proper header styling that stands out from body rows

How Markdoc works:
Markdoc is what renders the markdown content. You can define custom tags/nodes in the markdoc/ directory. Check out CodeBlock.tsx to see an example of a custom component for code rendering.

Testing:
Create a test markdown file with a table and make sure it renders nicely!