Update Targeted Universal Perturbation documentation and add example notebook

[Foxglove144]

Description

Enhances the documentation for the TargetedUniversalPerturbation class in ART. It includes a detailed explanation of some of the parameters in the constructor.

• Corrected the allowed and default adversarial attacker names.
• Explain what delta and eps do.
• Added :raises: ValueError in the generate() method for the docs.

The added documentation improves the code's readability and helps users understand the purpose and usage of the class more effectively.

Also, I added an example notebook that uses this attack (mostly derived from the test for this attack).

Fixes # (issue)

Type of change

Please check all relevant options.

• Improvement (non-breaking)
• Bug fix (non-breaking)
• New feature (non-breaking)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Testing

Please describe the tests that you ran to verify your changes. Consider listing any relevant details of your test configuration.

• Test A
• Test B

Test Configuration:

• OS
• Python version
• ART version or commit number
• TensorFlow / Keras / PyTorch / MXNet version

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[codecov-commenter]

Codecov Report

Merging #2212 (f7a3a64) into dev_1.16.0 (596aa14) will increase coverage by 1.27%.
Report is 13 commits behind head on dev_1.16.0.
The diff coverage is n/a.

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@@              Coverage Diff               @@
##           dev_1.16.0    #2212      +/-   ##
==============================================
+ Coverage       84.50%   85.77%   +1.27%     
==============================================
  Files             318      318              
  Lines           28338    28338              
  Branches         5161     5161              
==============================================
+ Hits            23947    24308     +361     
+ Misses           3071     2717     -354     
+ Partials         1320     1313       -7     

Files Changed	Coverage Δ
...attacks/evasion/targeted_universal_perturbation.py	91.01% <ø> (ø)

... and 14 files with indirect coverage changes