Support lambert grids where x/y lookups are matrixes

[rafaqz]

trafficstars

This is probably possible relatively easily using Unaligned lookups, as with AffineTransform lookups.

Getting all the selectors to work will be the hard part.

@tcarion this is from your comment here: https://github.com/rafaqz/Rasters.jl/blob/main/test/sources/gribdatasets.jl#L11

[felixcremer]

Isn't this a duplicate if #328?

[rafaqz]

Yep