Moving general surface hopping functions to SurfaceHoppingMethods.jl #869

Job	Run time
test (Core)	15m 59s
test (Analysis)	15m 46s
test (InitialConditions)	18m 31s
test (dynamics_classical)	17m 19s
test (dynamics_mdef)	18m 26s
test (dynamics_surface_hopping)	18m 24s
test (dynamics_cme)	18m 38s
test (dynamics_mapping)	17m 33s
test (dynamics_ehrenfest)	18m 40s
test (dynamics_ensembles)	16m 29s
	2h 55m 45s

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