Add b^\dagger-b for basisSHO

[codecov[bot]]

Codecov Report

Patch coverage: 50.00% and project coverage change: -0.03 :warning:

Comparison is base (905b678) 85.25% compared to head (a8b0371) 85.22%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #150 +/- ## ========================================== - Coverage 85.25% 85.22% -0.03% ========================================== Files 105 105 Lines 9989 9991 +2 ========================================== - Hits 8516 8515 -1 - Misses 1473 1476 +3 ``` | [Impacted Files](https://app.codecov.io/gh/shuaigroup/Renormalizer/pull/150?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shuaigroup) | Coverage Δ | | |---|---|---| | [renormalizer/model/basis.py](https://app.codecov.io/gh/shuaigroup/Renormalizer/pull/150?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shuaigroup#diff-cmVub3JtYWxpemVyL21vZGVsL2Jhc2lzLnB5) | `89.31% <50.00%> (-0.16%)` | :arrow_down: | ... and [3 files with indirect coverage changes](https://app.codecov.io/gh/shuaigroup/Renormalizer/pull/150/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shuaigroup)

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