Add Copy Icon to Retain Formatting on Artey Answers

Description:
Users have requested the ability to copy an Artey answer while retaining its original formatting, similar to the copy functionality available in other tools such as ChatGPT, Copilot, and GAILE.

Requested Enhancement:
Add a copy icon to each Artey answer that allows users to copy the response while preserving its formatting (e.g., line spacing, bullet points, paragraph breaks). The icon should function and appear similarly to the copy icons used in ChatGPT, Copilot, and GAILE — typically depicted as a paper icon with another paper behind it.

Business Impact:
This enhancement would make it significantly easier and faster for users to copy and paste Artey answers when sharing information with others requesting it, improving efficiency and ensuring the shared content remains clear and readable.

Current Behavior:
When a user copies an Artey answer, the formatting (such as line spacing) is stripped out, resulting in a less readable, unformatted block of text.

Expected Behavior:
When a user clicks the copy icon, the Artey answer should be copied to the clipboard with its original formatting intact, allowing it to be pasted elsewhere without loss of structure or readability.