Make it easier for folk to know that they can geolocate

[marxian]

Is your feature request related to a problem? Please describe.
It seems that we're not sure if people know they can zoom the map to their location. Maybe they don't find the map control.
Seems that people use the search
Describe the solution you'd like
Probably a more prominent control to invoke geolocation

Describe alternatives you've considered
We tried geolocating on load but it is annoying and against the W3C guidelines

Additional context
Maybe we should gather info now we've got plausible before we commit to a course of action?

[marxian]

I think the first thing to do it check the stats here: https://plausible.io/share/toiletmap.org.uk?auth=BW3helL2W3OVESMSObS_M

Then maybe instrument the search and the geolocate controls using a plausible event (https://plausible.io/docs/custom-event-goals)

I've set up two events as goals Geolocate and Search