FEATURE: Map Teaser

[sbruggmann]

Teaser with image background variant and optional free content, Tag and TagGroup for Map Teaser

[manuelmeister]

Thanks for your PR!
I think the Tag needs to move to an own folder. I'm not sure if the Teaser should have a variant or if its behavior is defined by the presence of the background image.

[sbruggmann]

I'd prefer to have an explicit variant.
Maybe in future we need two separate imagesSources to handle differtent requirements, but the still i'd wish to have a variant props to make the state clear.