Mapped features to be shown in Explore Projects

[Adrian-Shobrooke]

Is your feature request related to a problem? Please describe.
Mappers have to open each project to see what is required to be mapped. The two lines of text shown on the Explore Project page is not enough space to describe what should be mapped.

Describe the solution you'd like
Display the building, road etc. symbolsthat are displayed as Types of Mapping on the project specific page. The filters at the top of the Explore Project page could be extended to allow Mappers to select the types of object they prefer to Map. The enclosed image shows both parts of this idea with one line of projects without symbols, one row with symbols showing that the existing lay has space for this. symbols also has a small bonus in being language agnostic.

Describe alternatives you've considered
None

Additional context