Add Copy Button to Code Blocks

[yntpdotme]

The Code component currently lacks a built-in copy button functionality for code blocks, which is a common and useful feature in code highlighting components.

Current Behaviour

• Code blocks are rendered with syntax highlighting and line numbers
• No native way to copy code contents to clipboard

Requested Feature

Add a built-in copy button functionality that:

• Appears on hover (or permanently) in the top-right corner of code blocks
• Copies the raw code content (without line numbers) to clipboard
• Provides visual feedback on copy success