Set up build system for UFS-AQM application

[junwang-noaa]

Description

The UFS-AQM application will be set up by adding the CMAQ as a submodule, the UFS-AQM/CMAQ will be built with cmake.

Solution

Starting from Raffaele's branches:
ufs-weather-model branch:
https://github.com/rmontuoro/ufs-weather-model/tree/feature/aqm
FV3 branch:
https://github.com/rmontuoro/fv3atm/feature/aqm
AQM branch:
https://github.com/NOAA-EMC/AQM

Related to

Directly reference any issues or PRs in this or other repositories that this is related to, and describe how they are related. Example:

• required to support noaa-emc/nems/issues/<issue_number>
• needed by noaa-emc/fv3atm/pull/<pr_number>