(Feature Request) Allow grouping recordings by genre (category)

[illes]

Grouping recordings by genre is a neat feature of mythfrontend I could not replicate using pvr.mythtv.

I would imagine it could be introduced in various ways, e.g.

• as another layer in the current hierarchy of recording group > series title
• ad-hoc filtering option in the context menu (key M, or is that handled by PVR?)
• demand such functionality from PVR, which is already aware of recording categories

[illes]

similar request regarding tvheadend: https://forum.kodi.tv/showthread.php?tid=293283

[janbar]

It should be handled by PVR