Add your company logo and link to the users list!

[gdubicki]

Hey,

If you are using this app please consider creating a PR like #357 to add you company logo and link to the app docs at https://gitlabform.github.io/gitlabform/#used-by.

Showing that you use it will encourage more users to try it out and that will ultimately get us more contributions and the project will get even better. And you will get a little promotion and SEO benefits. Win-win! 😊