Popupmenu completion experience

[Wsine]

I observed that if a copilot suggestion is presented, the suggestion will not disappear when the popup menu is shown (e.g., nvim-cmp). Change the config to the following can help to improve the experience.

local suggestion = require("copilot.suggestion")
cmp.event:on("menu_opened", function()
  if suggestion.is_visible() then
    suggestion.dismiss()
  end
  vim.b.copilot_suggestion_hidden = true
end)
cmp.event:on("menu_closed", function()
  vim.b.copilot_suggestion_hidden = false
  suggestion.next()
end)