Fix history variables

[bprather]

After modifying the reductions code to work with HIP, most history outputs got removed. This re-enables them, with some updates to support SMR/AMR grids.

Note that to get all of the piles of GRMHD diagnostics, you can use variables = all_reductions in the hst output definition of the parameter file. Individual histories can be enabled with the variables conserved_vars, luminosities, eh_fluxes_cell, and eh_fluxes_flux, for the conserved variable totals, proxy and jet luminosties, and the cell- and flux-based calculations of the accretion rates, respectively.

• Diagnostic histories of flags are restored always
• EH magnetization is restored for all sims with an EH
• EH fluxes and conserved variable totals are implemented behind options