Add merra2 aerosol handling for TEMPO microphysics

[AndersJensen-NOAA]

• Introduced new module module_get_aerosols_for_mp for converting MERRA2 aerosol data.
• Updated mp_tempo.F90 to include new aerosol parameters and logic for handling aerosol awareness.

Description of Changes:

• Connects TEMPO microphysics to merra2 aerosols.
• Adds initialization functions for cloud, ice, and rain number concentration if they don't exist.
  -Fixes convert_dry_rho in Thompson init. Thanks to @climbfuji for useful discussions on this.

Tests Conducted:

None

Dependencies:

Add any links to parent PRs (e.g. SCM and/or UFS PRs) or submodules (e.g. rte-rrtmgp). For example:

• NCAR/ccpp-framework#<pr_number>
• NOAA-EMC/ufsatm#<pr_number>
• ufs-community/ufs-weather-model/#<pr_number>

Documentation:

Does this PR add new capabilities that need to be documented or require modifications to the existing documentation? If so, brief supporting material can be provided here. Contact the CODEOWNERS if your PR requires extensive updates to the documentation. See https://github.com/NCAR/ccpp-doc for Technical Documentation or https://dtcenter.org/community-code/common-community-physics-package-ccpp/documentation for the latest Scientific Documentation.

Issue (optional):

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Contributors (optional):

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