Use sklearn compliant MERF with EBM in springtime recipe

[Peter9192]

Could look something like this:

springtime/src/springtime/recipes/model_comparison_usecase.yaml

Lines 81 to 86 in 9b43c69

	# - merf.MERF # Must be instantiated before passing to pycaret; how to specify args?
	# fit_kwargs:
	# merf.MERF: # This won't work out of the box
	# fixed_effects: None # "the rest" after removing cluster, random effects, and target columns
	# random_effects: ['tmax_365','tmin_365', 'prcp_365', 'srad_365', 'swe_365']
	# clusters: "site_id"