[Feature] Convert report to html-report

[MartinX3]

If the feature is missing and I'm not just too stupid to find out how to do it:
Converting an already generated report.json to a report.html via html-report would be nice.

I already added the report as json to each entry and just wanted to convert it into an html-report on demand.

[daveshanley]

The feature does not exist.. yet