Add pairing cache for NWM

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 64.84%. Comparing base (2656ca7) to head (5006dba). Report is 87 commits behind head on main.

Files	Patch %	Lines
coupledmodeldriver/configure/forcings/base.py	80.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #151 +/- ## ========================================== + Coverage 64.39% 64.84% +0.44% ========================================== Files 35 35 Lines 3806 3871 +65 ========================================== + Hits 2451 2510 +59 - Misses 1355 1361 +6 ```

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