Kmeans grayscale

[leafism9]

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For any previously RGB specific lines in patch_extract() or predict_kmeans(), the added code checks the number of dimensions and number of channels in the image and chooses the RGB or grayscale vesion of the line accordingly. This is a non-breaking feature enhancement that allows grayscale functionality to the preexisting kmeans functions.

Additional update added 10/24/24 by Keely (k034b363), this PR now includes padding the outside edges of images input to predict_kmeans so that resulting masks can be applied to the original image. We have included this update here so as to avoid merge in order conflicts.

Type of update
Is this a: New feature or feature enhancement

Associated issues
Updated PR now closes: #1552

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[deepsource-io]

Here's the code health analysis summary for commits 92aea4c..5c207f3. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Python	✅ Success	🎯 1 occurence resolved	View Check ↗
Test coverage	✅ Success		View Check ↗

Code Coverage Report

Metric	Aggregate	Python
Branch Coverage	100%	100%
Composite Coverage	100%	100%
Line Coverage	100%	100%
New Branch Coverage	100%	100%
New Composite Coverage	100%	100%
New Line Coverage	100%, ✅ Above Threshold	100%, ✅ Above Threshold

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