[ADD] fuse Matmul + fastgalu -> gemmfastgelu (#11699)
**Description**: Describe your changes.
fuse MatMul + FastGelu -> GemmFastGelu
prepare for AMD optimized fused operator GemmFastGelu
usage:
python benchmark.py -g -m bert-base-cased --sequence_length 384
--batch_sizes 128 --provider=rocm -p fp16 --disable_embed_layer_norm
--enable_gemm_fast_gelu
**Motivation and Context**
- Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here.
