Test benchmark by changing feature extraction segment erasing with 0 values pixels outside of superpixel

[ryukinix]

At first, change default value of erase_color parameter to 0.

egsis/egsis/features.py

Lines 163 to 171 in cc477cf

	def feature_extraction_segment(
	img: np.ndarray,
	segments: np.ndarray,
	label: int,
	max_radius: Optional[int] = None,
	centroid: Optional[List[int]] = None,
	erase_color: Optional[int] = None,
	feature_method: FeaturesMethods = "comatrix"
	):

After running the benchmark, if metrics was improved by this change, consider erase_color being some kind of hyperparameter for EGSIS.