add requirements cpu

requirements-cpu.txt

@@ -0,0 +1,13 @@
+--index-url https://download.pytorch.org/whl/cpu
+--extra-index-url https://pypi.org/simple
+
+torch==2.2.2+cpu
+sentence-transformers>=2.2.0
+faiss-cpu>=1.7.4
+numpy>=1.24.0
+requests>=2.31.0
+python-dotenv>=1.0.0
+tqdm>=4.65.0
+transformers>=4.36.0
+huggingface-hub>=0.20.0
+scikit-learn>=1.3.0