Add a copy button to copy sent prompts to clipboard

[PeterDaveHello]

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Integrate a copy-to-clipboard button in chat prompt to facilitate easy copying of prompt messages. Include a title for the prompt message area to enhance clarity, prevent button and prompt message overlap, and also maintain stylistic consistency with response messages.

Close #769

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Name	Status	Preview	Comments	Updated (UTC)
chatall	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 3, 2024 9:32pm

[sunner]

Thank you for providing one of the most required feature. But the title occupies too much space and is not pretty.

Could you change the button to a hangover button next to the prompt bubble?

[PeterDaveHello]

Not my best thing, additional help needed 😅