Enhance suggestions in PRs #3490

It would be cool to have automatic suggestion when reviewing a PR.

Currently if there is some code written:

console.log('Hello');
console.log('World');

And I would like to suggest that the person could write otherwise, I have to:

1) Select the lines 2) add ```suggestion <suggested_code> ``` 3) Usually rewrite 99% of the code (including matching spacing) into a comment, where 1% is the diff

That results in writing a comment:

```suggestion console.log('Hello', 'World'); ```

I think a button could appear when selecting the line(-s) on a PR that would say "Suggest change" and if clicked, would prefill the comment with ```suggestion <selected_code> ```

It could appear in https://github.com/<username>/<repo>/pull/<pull_id>/files

I would be more than happy to implement it myself