XAI classification notebook update

[GalyaZalesskaya]

What was done:

• Updated structure according to Mark and Minje
  
• Updated calls according to updated API
• Updated comments & text
• Fixed overlay issue

Issues:

• explanation = explainer(image, target_explain_group=TargetExplainGroup.ALL) fails with error: OpenCV(4.9.0) /io/opencv/modules/imgproc/src/resize.cpp:3789: error: (-215:Assertion failed) !dsize.empty() in function 'resize'

TODO:

• Update README: update structure, add reciprocam arxiv link
• Substitute loading tests/assets/cheetah_person.jpg image with wget link (can be done during PR to OV_notebooks)
• Fix minor text issues
• Update pypl modules for numpy 2.0 to compile
• Check that target_layer for MobiilenetV3 is correct. It returns correct values, but it's not the last conv layer

Question:

• Do we need Advanced section and Insert XAI branch section
• There's duplicated code

# Check saved saliency maps
print(f"Saliency maps were generated for the following classes: {list(explanation.saliency_map.keys())}")
print(f"Saliency map size: {explanation.shape}")

# Show saliency maps for cheetah class
cheetah_raw_sal_map = explanation.saliency_map[cheetah_class_index]
cheetah_raw_sal_map = cv2.cvtColor(cheetah_raw_sal_map, cv2.COLOR_BGR2RGB)

plt.imshow(cheetah_raw_sal_map)
plt.show()

Can be moved to xai.utils as get_sal_map_info for better readability