Fist prototype, but there are still a few things I want to change
- database selection
- option to preselect text/type under the curser
- insert the actual function name not the type signature

Finally made some progress on the utop integration into ocamlmycaml.nvim. Still not sure how the final UX should look like, but it's inspired by emacs' scratch buffer. So far <C-CR> evaluates the visual selection in a utop instance and appends the output to a temp buffer