docs: add

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.55118% with 12 lines in your changes missing coverage. Please review.

Project coverage is 89.87%. Comparing base (ad257b8) to head (f132056).

Files	Patch %	Lines
src/unxt/_quantity/register_primitives.py	90.16%	12 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #150 +/- ## ========================================== + Coverage 89.55% 89.87% +0.32% ========================================== Files 26 26 Lines 1407 1482 +75 ========================================== + Hits 1260 1332 +72 - Misses 147 150 +3 ```

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