Extend ReportMergeTask for md

[kvn-stgl]

Expected Behavior

I would like to use the Markdown Report (#4858) in projects with multiple modules.

For this, I would like to extend the ReportMergeTask to work also with markdown files. Sadly, this is kind of a problem: We can not simply parse the markdown reports because it's just text.

Idea

An idea would be to implement a new output generator like SerializedOutput which just serializes the Detektion-object and extend the ReportMergeTask to generate an MD file out of the serialized Detektion-object.

I'm not really happy with this solution but I haven't another idea about how to get a merged markdown report (and maybe we can also use this for the txt/html output).

Your Environment

Version of detekt used: 1.21.0-RC2
Version of Gradle used (if applicable): 7.4.2

[3flex]

Related to #4827

[BraisGabin]

Also related with #4289. If the Detekt task generates a single report or serializes the Detektion list this and other tasks would be more easy. Probably SARIF could be that base report.

The idea detekt-core > SARIF? > Reports (single, merged, baselines, etc)

This would work extremely well with gradle. But this is a huge refactor.

[3flex]

Yeah that's basically what JaCoCo does, as an example.

[github-actions]

This issue is stale because it has been open 90 days with no activity. Please comment or this will be closed in 7 days.

[github-actions]

This issue is stale because it has been open 90 days with no activity. Please comment or this will be closed in 7 days.

[JavierSegoviaCordoba]

Html is not working too