[MO] Relax Reshape layer hardcode under MatMul

[jane-intel]

Description: Transformation to relax hard-coded Reshape to 2D before MatMul operation

JIRA: as a part of #37084

Code:

• Comments
• Code style (PEP8)
• Transformation generates reshape-able IR EVEN BETTER :) IT MAKES IR reshape-able
• Transformation preserves original framework node names

Validation:

• Unit tests
• Framework operation tests
• Transformation tests
• e2e model test with an update of ./tests/e2e_oss/utils/reshape_utils.py
• Model Optimizer IR Reader check

Documentation:

• Supported frameworks operations list
• Supported public models list
• New operations specification
• Guide on how to convert the public model
• User guide update

[vurusovs]

@jane-intel please, take a look at memory tests - there is some significant increase of consumption for VGG16 on CPU and GPU (you may observe timeline report in "stress" job to compare with previous commits' validation)

[jane-intel]

@jane-intel please, take a look at memory tests - there is some significant increase of consumption for VGG16 on CPU and GPU (you may observe timeline report in "stress" job to compare with previous commits' validation)

I do not see any fails in the stress job. Also there is no place from where some significant increase of memory consumption can come.

[jane-intel]

@lazarevevgeny, there was and still is and intention to make it ND pass where possible. 2D case is the most popular, so I would like to merge it right now and work on extending the pass in the next release.