Implement SNICAR v3 snow albedo model

[cenlinhe]

This PR is to implement SNICAR v3 snow albedo model into HRLDAS/Noah-MP. This HRLDAS PR is associated with the Noah-MP PR (NCAR/noahmp#187).

Both 2-D CONUS and 1-D Irwin site tests are successful for HRLDAS/NoahMP-SNICAR.

The SNICAR model follows the code that is implemented in the Community Land Model (CLM) done by this study (He et al. 2024 JAMES, https://doi.org/10.1029/2023MS003861) and in this CLM PR : ESCOMP/CTSM#1861

The reference of this SNICAR coupling with Noah-MP v5 is here (Lin et al., 2025 JHM): https://doi.org/10.1175/JHM-D-24-0082.1

The original code implementation in Noah-MP is done by Tzu-Shun Lin (NCAR) with updates from Cenlin He (NCAR).

Specifically, this PR includes the SNICAR module for the following snow albedo calculation features:

• Basic SNICAR model using two-stream snowpack radiative transfer and multi-layer snowpack (Flanner et al. 2007)
• Updated ice optical properties from Flanner et al. (2021), with multiple types for ice refractive indices
• Updated aerosol optical properties from Flanner et al. (2021) with multiple dust types & new BC and OC optics
• Updated downward solar spectra from Flanner et al. (2021) for multiple condition types.
• More accurate radiative transfer solver (adding-doubling) from Dang et al. (2019).
• Nonspherical snow grain scheme from He et al. (2017).
• BC-snow internal mixing scheme from He et al. (2017).
• Dust-snow internal mixing scheme from He et al. (2019).
• Hyperspectral (480-band, 10-nm spectral res) capability with all the above features
• Add new SNICAR namelist controls

[cenlinhe]

Both 2-D CONUS and 1-D Irwin site tests are successful for HRLDAS/NoahMP-SNICAR.

[tslin2]

It looks good me, but the noahmp updated SNICAR source code submodule has not linked to this PR

[cenlinhe]

Thanks @tslin2 . I will include your suggested changes. I will link the updated NoahMP Github commit once the NoahMP PR is approved and merged for this SNICAR updates.

[cenlinhe]

@tslin2 @RAbolafiaRosenzweig I have included all Tzu-Shun's suggested changes. Please review and approve it at your earliest convenience. Thanks! I will update the NoahMP linked commit once the PR in NoahMP Github is approved and merged.

[RAbolafiaRosenzweig]

Changes are applied appropriately for SNICAR v3 snow albedo model.