Add transformation pipeline to PrePostProcessing

[itikhono]

Details:

After switching from ModelOptimizer to OVC, the order of
applying PrePostProcessing and MOCTransformations has changed:

MO path : [fw model conversion -> PrePostProcessing -> MOC] -> nncf
OVC path: [fw model conversion -> MOC] -> PrePostProcessing -> nncf

 Since nncf is applied with a not fully optimized model, extra FQ ops might appear,
 which can affect both accuracy and performance.
e.g. Mul -> Conv fusion is not applied due to extra FQ

 PrePostProcessing is not part of OVC, so we have to insert additional
 Transformation calls inside PrePostProcessing.

Tickets:

• CVS-160786
• CVS-161724

[CuriousPanCake]

I wonder if this makes the pipeline even more complicated. We have an issue of discrepancy between read/compile & convert, as far as I remember. Does it affect this in any way?

[itikhono]

I wonder if this makes the pipeline even more complicated. We have an issue of discrepancy between read/compile & convert, as far as I remember. Does it affect this in any way?

we decided to call only the dedicated transformations instead of the MOC

[CuriousPanCake]

LGTM