Cleanup projection code

[ffreyer]

We have quite a bit of code that deals with projecting positional data from one space to another. I think there is a fair amount of duplicate code in this, which would be good to remove/unify. The project methods also need to be clearer about what they do I think.

In terms of clarity it might be good to keep project(cam, input_space, output_space, pos) and add more space options to exhaust all the options. It might also be nice to allow input_space => output_space as an argument here.

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In https://github.com/MakieOrg/Makie.jl/blob/master/src/camera/projection_math.jl we have to_world and various project methods which aren't all that clear. These all ignore model and transform_func.

In https://github.com/MakieOrg/Makie.jl/blob/master/src/basic_recipes/error_and_rangebars.jl we have scene_to_screen and screen_to_scene which functionally match project. After #3012 these will be changed to plot_to_screen and screen_to_plot and include model and transform_func.

GLMakie has some code doing a full plot space -> screen space projection without using project at all in https://github.com/MakieOrg/Makie.jl/blob/master/GLMakie/src/drawing_primitives.jl (lines).

CairoMakie defines its own project functions in https://github.com/MakieOrg/Makie.jl/blob/master/CairoMakie/src/utils.jl which are used instead of Makie's project.

[ffreyer]

Adjacent to this, we still apply model transformations if space != :data.