feat(examples): release an example implementation of T-V reward model.

[calico-1226]

Description

We provide an example implementation of training a preference predictor reward model on our dataset. This model translates abstract human values into quantifiable and optimizable scalar metrics. Consequently, the reward model can partially replace human evaluators in assessing outputs from video generation models and act as a supervisory signal to enhance the performance of these models.

Motivation and Context

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Checklist

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