Move GeoInterace methods to an extension in GeoInterface to remove dependency loops

[rafaqz]

As MakieCore depends on GeometryBasics there is no way for GeoInterface to add makie recipes without a dependency loop.

We want the GeoInterface geometries to plot easily, and for our macro to add Makie recipes to be useable from GeoInterface.

The problem is going to be managing the transition without breaking lots of code and / or precompile.

See JuliaGeo/GeoInterface.jl#143

[asinghvi17]

Can you call geointerface_geomtype methods from an extension? Those at least need GI traits for dispatch...

[rafaqz]

Good point. We can shift to module dispatch in GI.convert so geointerface_geomtype isn't hit.

That's the plan anyway with 1.10 being LTS

[asinghvi17]

Ah, yeah the current method could be kept as a fallback.