The following custom media site code adds limited map support on my site, perhaps it might work for you too? It is pretty basic though and doesn't always fetch the correct place such as if there are several locations with the same place name. But it is better than nothing
Media Site ID: googlemaps
Site Title: Google Maps
Site URL: https://www.google.com/maps/
Match URLs: (you might also like to duplicate other domains, one per line e.g. google.co.uk, google.ca, etc etc)
Code:
https://www.google.com/maps/place/{$id}/
Embed HTML:
Code:
<iframe src="https://www.google.com/maps/embed/v1/place?key=(INSERT API KEY)&q={$id}&zoom=15" width="450" height="300" frameborder="0"></iframe>