Interactive mode like native coala

When using native `coala`, I would have an interactive mode when there is any suggestion.
Can we do it in vim like a merge tool panel? e.g. https://asciinema.org/a/12436gcrwmuf169s2ze6eedpi
Or, could it like `git add -p` style?

Compare native coala's interactive suggestion behavior with the coala-vim workflow, using the linked asciinema example as context. Decide whether the intended result is a merge-tool panel or a `git add -p`-style flow, then document the interaction and confirm it works for suggestions in Vim.

Written by the indexing model from the issue text.