Hierarchies: Dry Held-Suarez driver

[LenkaNovak]

Following Held and Suarez, 1994

Climatology and phase space of baroclinicity and eddy heat fluxes

top row: reference climatologies of T and u from the paper, and phase space plot from observations of the North Atlantic.
bottom row: corresponding figures from this PR's dry Held-Suarez

Components

• create new pipeline ClimaCoupler-Hierarchies and add the HD run
• add dry HS driver
• separate atmos config from atmos_init, so that we can specify parameter values from the run script

Note, the plots will be submitted as a separate PR