Add two way fire coupling to fv3atm

[danrosen25]

Description

This PR satisfies two-way coupling requirements for fv3atm and the community fire behavior model. It includes an option to enable fire coupling 'cpl_fire', which enables several export fields needed by the fire behavior model. It also includes new import fields for ccpp physics: heat flux from fire, upward specific humidity flux from fire, and smoke tracer. This is a draft PR until the ccpp physics coupling dependency is satisfied and the submodule can be updated appropriately.

Co-author: @masih-e

Issue(s) addressed

• fixes #814

Testing

The rt.conf test has been used and one test from each compile line has been executed on derecho with the intel compiler. The baseline results have not changed but a new regression test has been added for coupling atm and fbh (fire behavior). This test is here: New Test

Dependencies

This dependency needs to be satisfied before the fv3atm changes can be complete https://github.com/ufs-community/ccpp-physics/pull/193