enable copilot to generate commit message based on related changes

[dryezl]

The function is enabled in vscode. However, I did not know how to implement it in vim.
I use vim-fugitive in vim to control git.

[dryezl]

I found that g:copilot_workspace_folders can allow for context to improve suggestion.
perhaps a vim function to send commit prompt ("create a commit message based on related change") and those related change to copilot.

[Programmer-RD-AI]

Love the idea of Copilot auto-drafting messages from the staged diff. Could we take it one step further and feed Copilot a short sample of recent commit summaries (e.g. git log -n 20 --format=%s) so it picks up our conventional-commit prefixes and tone?