Add Reqnroll test framework

[nvborisenko]

Hi Team,

On the https://reportportal.io/installation page we need to add new supported test framework for:

• Tab: .NET
• Our github repo: https://github.com/reportportal/agent-dotnet-reqnroll
• Their web site: https://reqnroll.net/
• Image like this:
  

I could propose a PR, but I don't now how to make the SVG image.

[AmsterGet]

Hi @nvborisenko !
Thanks for highlighting this!
I'll ask our UI team to update the page.
We are also going to add a Vitest integration mention, so it will be bulk update.

[AmsterGet]

Also, is it okay to announce it on RP's social media channels?
cc @VeranikaRymzha