feat: add ElasticBands

[Aglargil]

Reference issue

#411

What does this implement/fix?

• Add the ElasticBands algorithm.
• Add compute_sdf_scipy and compute_udf_scipy interfaces to Mapping.DistanceMap.

Additional information

The ElasticBands algorithm utilizes distance map. The original distance map was implemented in Python for educational purposes, taking approximately 3 seconds to process a 500*500 map on my machine. In contrast, scipy.ndimage.distance_transform_edt(implemented in C) completes the task in about 0.05 seconds. Therefore, to improve efficiency, the compute_sdf_scipy and compute_udf_scipy interfaces were added to Mapping.DistanceMap.

CheckList

• Did you add an unittest for your new example or defect fix?
• Did you add documents for your new example?
• All CIs are green? (You can check it after submitting)

[Aglargil]

Hi, @AtsushiSakai
I am delighted to contribute the ElasticBands algorithm to this outstanding project. If you have any suggestions or feedback, please feel free to let me know—I will address them promptly.

[AtsushiSakai]

LGTM. Thank!!