Add packed QKV and rotary embedding within GroupQueryAttention to model builder #245
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Description
This PR adds the fusion of rotary embeddings in GroupQueryAttention and combines the Q/K/V MatMuls and Q/K/V Adds into packed QKV MatMuls and packed QKV Adds.
Motivation and Context
The fusion of rotary embeddings in GroupQueryAttention helps improve model performance on large sequence lengths. Combining the individual Q/K/V MatMuls and Q/K/V Adds into packed QKV MatMuls and packed QKV Adds helps improve model performance in general.