Mingxuanwupnnl/eamxx mam microphys for mamxx

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 92.85714% with 1 line in your changes missing coverage. Please review.

Project coverage is 96.16%. Comparing base (636ab95) to head (d81c5a0). Report is 20 commits behind head on main.

Files with missing lines	Patch %	Lines
src/mam4xx/mo_setext.hpp	50.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #347 +/- ## ======================================= Coverage 96.16% 96.16% ======================================= Files 43 43 Lines 9486 9490 +4 ======================================= + Hits 9122 9126 +4 Misses 364 364 ``` | [Flag](https://app.codecov.io/gh/eagles-project/mam4xx/pull/347/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eagles-project) | Coverage Δ | | |---|---|---| | [](https://app.codecov.io/gh/eagles-project/mam4xx/pull/347/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eagles-project) | `96.16% <92.85%> (+<0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eagles-project#carryforward-flags-in-the-pull-request-comment) to find out more.

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