Export compiled objectives for common equilibrium resolutions?

[dpanici]

https://jax.readthedocs.io/en/latest/export/export.html

[YigitElma]

In my last meeting with Egemen, we talked about this after I showed him some profiling. The long initialization and long compile times made him ask this. I think #1374 and general performance improvements on factorize_inear_constraints will make actual minimization start way earlier and further tricks like storing compiled code will be redundant. But might be worth trying.

Some concerns tho,

• Does every jax version create different compiled code? Should we compile for multiple versions?
• How many different resolutions we want to store?
• And should we store them in master branch?

I feel like this is not too easy but anyway.