add start of local partial moran statistics

[ljwolf]

This adds my partial and auxiliary-regressive local Moran statistics forthcoming in the annals. This needs

• tests
• example notebook

[codecov]

Codecov Report

Attention: 198 lines in your changes are missing coverage. Please review.

Comparison is base (2e812a5) 73.6% compared to head (a6e28da) 69.5%.

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #279     +/-   ##
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- Coverage   73.6%   69.5%   -4.1%     
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  Files         24      25      +1     
  Lines       3316    3514    +198     
  Branches     520     552     +32     
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  Hits        2441    2441             
- Misses       708     906    +198     
  Partials     167     167             

Files	Coverage Δ
esda/mvmo.py	0.0% <0.0%> (ø)