Get x and y limits of Makie plot

Specific Domains Visualization
6

Yeah that works.

julia> let p = scatter(50randn(5), 50randn(5))
           CairoMakie.reset_limits!(p.axis)
           p.axis.finallimits[]
       end
HyperRectangle{2, Float32}(Float32[-49.65375, -63.7986], Float32[45.149063, 95.1717])