Format tooltips using client input

### Details

Format tFsAutoComplete should allow customising the rendering for different clients based on client capabilities or client names.

For exaple on Emacs the Eldoc functionlity does not allow to display the exammples section and show a link and a message: `Open the documentation to see the truncated examples`.

I've initially reported the effect of this issue on emacs-fsharp-mode https://github.com/fsharp/emacs-fsharp-mode/issues/339

### Checklist

- [X] I have looked through existing issues to make sure that this feature has not been requested before
- [X] I have provided a descriptive title for this issue
- [X] I am aware that even valid feature requests may be rejected if they do not align with the project's goals
- [ ] I or my company would be willing to contribute this feature