Perform coordinate binning in pixel space

[wtbarnes]

Fixes #88

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 79.54545% with 9 lines in your changes missing coverage. Please review.

Project coverage is 61.09%. Comparing base (8e3c18d) to head (7744e6e).

Files with missing lines	Patch %	Lines
synthesizAR/instruments/hinode.py	20.00%	4 Missing ⚠️
synthesizAR/visualize/fieldlines.py	0.00%	3 Missing ⚠️
synthesizAR/instruments/base.py	93.93%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #104      +/-   ##
==========================================
+ Coverage   60.83%   61.09%   +0.25%     
==========================================
  Files          41       41              
  Lines        2160     2159       -1     
==========================================
+ Hits         1314     1319       +5     
+ Misses        846      840       -6     

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