[WIP] Polymorphic PC

[ax3l]

• replace all templates
• setArena, update define() calls, etc.
• remove unnecessary classes (e.g., PinnedMemoryParticleContainer): if WarpXParticleContainer had not purely virtual functions, this would be cleaner to implement (adding a WarpXParticleContainer::Base for now).
• test on GPU at runtime
• rebase on Specialize a Polymorphic ParticleContainer AMReX-Codes/pyamrex#428
• rebase on PC::make_alike<Allocator> Change Default AMReX-Codes/amrex#4771 and simplify make_alike calls, and ParticleContainerToBlueprint: Allocator AMReX-Codes/amrex#4776

[ax3l]

test_2d_particle_reflection_picmi.run seems to fail in shutdown of the sim, maybe a (too) late deallocation of the boundary buffer particles (after AMReX finalize) ...?

[ax3l]

Cool, only one test fails: test_2d_particle_reflection_picmi.run

@roelof-groenewald I am thinking about merging this in the current release cycle. Would you be able to potentially help me by running your own GPU tests against this branch, to make sure I do not break any of your Python GPU usage?

[roelof-groenewald]

Would you be able to potentially help me by running your own GPU tests against this branch, to make sure I do not break any of your Python GPU usage?

Sure! By when do you want to push the new release? (in other words by when should I have this tested?)

[ax3l]

I think I can give you a heads up some time next week to test this :)