[FEATURE] Add a copy code feature for every code block in the documentation.

[ommprasad-programmer]

Feature Description

Describe the feature clearly.
Add a GitHub-style copy button to all documentation code blocks.
The button should appear in the top-right corner of each code block and allow users to copy the entire snippet with a single click.

Problem It Solves

Currently, users must manually select and copy code snippets from the documentation.
This creates a poor developer experience, especially when working with large code examples.

Proposed Solution

Add a copy button to every code block.
Use the Clipboard API to copy code content.
Show temporary feedback after copying, such as:
Copied!
icon change
tooltip notification
Ensure the design matches GitHub-style code block interactions.

Additional Context

Current code blocks do not include any copy functionality.

Reference UI:

GitHub documentation/code block behavior
Top-right aligned copy button
Minimal and clean interaction design

[ommprasad-programmer]

hey @pushkarscripts i want to work on this

[Sudhasri-ui]

Hi! @pushkarscripts I'd like to work on this issue under GSSoC'26. Could you please assign it to me?