ENH: support for osx-{64,arm64}, win-64

[h-vetinari]

Cvxpy recently added support for using GLOP and PDLP from ortools.

I'd love to have this in the conda-forge package by default, but cvxpy is built for many more arches than ortools currently.

I know it was already a herculean effort to get there, so this is not a complaint or a call to action, but just an issue I can point to why cvxpy doesn't come with the ortools solvers yet.

[BastianZim]

osx-64 is currently stuck in #7 where we're not sure how to solve it, any help appreciated. :)

The rest is currently stuck on missing deps right now. As soon as that's unblocked I'm happy to add them here.

linux-{aarch,ppc} is actually already being tracked in the migrations, we're just waiting on conda-forge/coin-or-cgl-feedstock#8 from what I can see.

[h-vetinari]

First step done in #31; osx isn't looking too bad in #34, windows needs the coin-or-* stack to be built first.