Add support for preference tuning pipelines

[ktam3]

After things are reconciled, we need to add support for preference tuning pipelines

Introduce 3 pipelines:

• Data annotation routing > route samples for preference tuning and annotate
• Student Model response generation
• Log likelihood generation for weak vs strong model for reward calculation

[ktam3]

@Maxusmusti - i can't add you as an assignee on here

[aakankshaduggal]

@ktam3 i will work in collaboration with the training team(@Maxusmusti) for this

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