[FEATURE] Add embeding ranker in PyTorch

Description

https://www.tensorflow.org/recommenders/examples/basic_ranking, but using PyTorch instead of TF

Expected behavior with the suggested feature

Willingness to contribute

• Yes, I can contribute for this issue independently.
• Yes, I can contribute for this issue with guidance from Recommenders community.
• No, I cannot contribute at this time.

Other Comments