add python requirement.txt for running GLM2 model (#226)

Signed-off-by: Ben Gao <bengao168@msn.com>

files/models/ChatGLM2/requirement.txt

+fastapi==0.101.1
+numpy==1.24.3
+pydantic==1.10.7
+scikit_learn==1.2.2
+sentence_transformers==2.2.2
+sse_starlette==1.6.5
+starlette==0.27.0
+tiktoken==0.4.0
+torch==2.0.1
+transformers==4.31.0
+uvicorn==0.23.2
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