Added smm19-lbte

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[codecov]

Codecov Report

❌ Patch coverage is 91.83673% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.99%. Comparing base (048c04b) to head (57cd449).
⚠️ Report is 4 commits behind head on develop.

Files with missing lines	Patch %	Lines
phono3py/conductivity/interband_kappa_solvers.py	91.80%	10 Missing ⚠️
phono3py/conductivity/smm19/__init__.py	71.42%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #529      +/-   ##
===========================================
- Coverage    78.04%   77.99%   -0.05%     
===========================================
  Files          111      112       +1     
  Lines        18204    18154      -50     
===========================================
- Hits         14207    14159      -48     
+ Misses        3997     3995       -2     

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