Add option to not show suggestions unless manually triggered

[Roman-]

Having some experience of using copilot and codeium, I found that the most productive way of using tools like these involves disabling automatic suggestions and only show them in specific places by manually triggering them.

However, with codeium I can't easily achieve this: when I set let g:codeium_enabled = v:false, the "Manually trigger suggestion" action dosen't work anymore.

[pqn]

I've added a separate option in be2fa21f4f63850382a0cefeaa9f766b977c9f0c that should do what you want.