Handle custom Git hook result once MR is merged

Description

As a developer

I need to see the git-hook result once the MR is merged (similar to this issue but once the MR is merged successfully)

So that I can see the results of any actions described in git hooks

Use case

On our project the SVN is a standard repository. In our team we use git-lab with git flow and syncronize git with svn using third-part tool and git hooks. It'd be really nice to see the output of git post-recieve hook once the MR is merged (so we can put an info about successful syncronization / any issues during one). Also, this can be useful for any other post-commit actions, so the users can see and make sure those actions actually happened after successful merge.

Note

I haven't found if there's a way to get the result of web-hook so i get same result but with web-hook. Please clarify if there's a way to display result of web-hook on merge request page.