Chunk voxel_grid filter to avoid running out of memory

[at-wat]

Use seqsense/pcgol#60 to chunk voxelgrid filter.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 38.09%. Comparing base (b89f64f) to head (59fa03e).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
command.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #305      +/-   ##
==========================================
- Coverage   38.16%   38.09%   -0.07%     
==========================================
  Files           8        8              
  Lines        1643     1646       +3     
==========================================
  Hits          627      627              
- Misses        980      983       +3     
  Partials       36       36              

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[f-fl0]

LGTM