Add screenshots for all editors where to find button to open GitHub Copilot Chat

[rakleed]

Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://docs.github.com/en/copilot/using-github-copilot/copilot-chat/asking-github-copilot-questions-in-your-ide

What part(s) of the article would you like to see updated?

Add screenshots for Eclipse, Visual Studio, and Xcode where to find a button to open GitHub Copilot Chat.

Additional information

No response

[Sharra-writes]

@rakleed Nice to see you! I think this sounds like a helpful impulse, so let me check in and find out if there's a reason not to, and I'll let you know.