Add example / doc / func tests for Torch support

[goodsong81]

[Changes]

• Add example script for Torch->ONNX XAI support
  • How to run

  python examples/run_torch_onnx.py

• Update documentations
  
• Add functional tests

[Future work]

• Optional torch installation

[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 94.30%. Comparing base (a95e871) to head (202b049).
Report is 3 commits behind head on releases/1.1.0.

Files with missing lines	Patch %	Lines
openvino_xai/methods/white_box/base.py	88.88%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           releases/1.1.0      #66   +/-   ##
===============================================
  Coverage           94.29%   94.30%           
===============================================
  Files                  27       27           
  Lines                1857     1860    +3     
===============================================
+ Hits                 1751     1754    +3     
  Misses                106      106           

Flag	Coverage Δ
dev-py310	94.30% <91.66%> (+<0.01%)	⬆️

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[GalyaZalesskaya]

Great update! Thank you for your work!

[GalyaZalesskaya]

Looks great, thanks!