[OP]add gelu_tanh

[ckl117]

Motivation

add Activation OP gelu_tanhwith better performance to replace the ACT2FN ["gelu_new"] of paddleforms.

Modifications

add Activation OP gelu_tanhwith better performance

Usage or Command

from fastdeploy.model_executor.layers.activation import gelu_tanh
input = paddle.randn([12, 1024], dtype="float16")
out = gelu_tanh(input)

Accuracy Tests

add tests/operators/test_gelu_tanh.py

Checklist

• Add at least a tag in the PR title.
  • Tag list: [[FDConfig],[APIServer],[Engine], [Scheduler], [PD Disaggregation], [Executor], [Graph Optimization], [Speculative Decoding], [RL], [Models], [Quantization], [Loader], [OP], [KVCache], [DataProcessor], [BugFix], [Docs], [CI], [Optimization], [Feature], [Benchmark], [Others], [XPU], [HPU], [GCU], [DCU], [Iluvatar], [Metax]]
  • You can add new tags based on the PR content, but the semantics must be clear.
• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
• If the current PR is submitting to the release branch, make sure the PR has been submitted to the develop branch, then cherry-pick it to the release branch with the [Cherry-Pick] PR tag.

[paddle-bot]

Thanks for your contribution!