Fix blob analysis to work in node

[rishabhshuklax]

Fixes #1378

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[rishabhshuklax]

This works fine in Node now but for that we need to merge #1564, because it is generating wrong output in node because the way currently pixelmanipulation.js is written.

I tested this solution in that branch and it was generating correct output for the image!

@jywarren please review this!

[codecov]

Codecov Report

Merging #1589 (495f250) into main (853e719) will decrease coverage by 1.38%.
The diff coverage is 13.04%.

❗ Current head 495f250 differs from pull request most recent head ec80f82. Consider uploading reports for the commit ec80f82 to get more accurate results

@@            Coverage Diff             @@
##             main    #1589      +/-   ##
==========================================
- Coverage   66.67%   65.29%   -1.39%     
==========================================
  Files         130      132       +2     
  Lines        2686     2746      +60     
  Branches      433      439       +6     
==========================================
+ Hits         1791     1793       +2     
- Misses        895      953      +58     

Impacted Files	Coverage Δ
src/Modules.js	100.00% <ø> (ø)
src/modules/EdgeDetect/Module.js	100.00% <ø> (ø)
src/modules/WebglDistort/Module.js	2.29% <0.00%> (ø)
src/modules/ColorHalftone/Module.js	3.63% <3.63%> (ø)
src/modules/BlobAnalysis/Module.js	22.22% <14.28%> (-8.55%)	⬇️
src/modules/ColorHalftone/index.js	100.00% <100.00%> (ø)
src/modules/EdgeDetect/EdgeUtils.js	86.81% <100.00%> (-0.15%)	⬇️

[harshkhandeparkar]

Lgtm.

[gitpod-io]

[harshkhandeparkar]

This one's ready, just needs a review.

[gitpod-io]

[jywarren]

Whew, excellent! And many thanks! Apologies for the slowness, just getting this going again!