use ClimaParams for shared parameters in coupled sims

[juliasloan25]

Purpose

Get parameters from ClimaParams instead of hardcoding them in ClimaCoupler.

Note that any parameter overrides specified in parameter_files are now applied at the coupler level (in the driver), then passed to component models as a TOML dict. This might change interfaces for calibration and/or weather quest.

closes #1520
closes #1372

might close #342 and #70, but we need to make sure these parameters aren't being overwritten in component models

Content

• parameters to get from CP
  • sigma (Stefan Boltzmann constant)
  • C_to_K
  • thermo_params
  • planet radius (note this was previously wrong when we constructed a boundary space independent of the atmosphere space, i.e. share_surface_space = false)
• add constructors for prescribed ice and slab ocean parameters that take in a toml dict
• for bucket and land constructors, take in a toml dict instead of a list of parameter files (parameters from these files are overriden at the coupler level now)

To Do

remaining:
atmos accepting a toml dict (maybe can just call AtmosConfig directly)
oceananigans/climaseaice accepting a toml dict of parameters
add tests to verify that components are using the same values

[juliasloan25]

@costachris do you think this PR addresses #1491 or is there more work to be done for that?