Initial tests with a Makie extension

[trulsf]

This is just some initial testing with a possible Makie extension for plotting profiles (see also issue #16).

The following is tested and seems to work:

1. A type recipe that handles periods and profiles as input and converts it to 2D points
2. A full recipe that creates a new plot type for profiles
3. Implementing specific plots by defining new methods for Makie.plot()

I guess there is a lot of room for experimenting if we should include this kind of support.

[trulsf]

See also https://docs.makie.org/stable/explanations/recipes

[hellemo]

Very cool!

Looking at some of the example plots, I think it would be really nice to hook into the mapping of AlgebraOfGraphics to visualize things like scenarios and strategic periods, such that one may easily switch between using facet plots or differentiating by color or linestyle or even do percentile bands. No idea how hard it would be though, I guess we would need to provide some form of tabular interface to the profiles.

[trulsf]

I have added some initial testing with AOG using vectors of named tuples to implement the Tables interface for profiles. I kind of like this approach better than providing specific Makie plots.