Fix printing for wrapper geoms

[asinghvi17]

The wrapper geoms dump all info to the REPL when printed, which is quite annoying. A Tables.jl like overview would be cool for feature collections, and perhaps something like Shapefile.jl printing for wrapper geoms? We could even mock up the WKT.

[rafaqz]

Sounds great

[asinghvi17]

Sweet. I'll get to this at some point in the next few weeks unless someone else does it first :D

[asinghvi17]

@BenCurran98 worked on this at the hackathon, FYI so people don't pick this up and duplicate work!