First try to use pkg extension

[tmigot]

98 cc @abelsiqueira

However, I will have to change the way we keep track of the available solvers, because I don't think external solvers can update JSOSuite.optimizers dataframes, the way I did:

JSOSuite.optimizers[JSOSuite.optimizers.name .== "CaNNOLeS", :is_available] .= 1

[abelsiqueira]

We should have some short script timing the TTL and TTFX, so we can evaluate some alternatives. Did you manage to watch the JuliaCon presentation about Package Extensions?