add requirements.txt with necessary dependencies

requirements.txt

@@ -0,0 +1,11 @@
+gradio>=4.0.0
+torch>=2.0.0
+torchvision>=0.15.0
+opencv-python>=4.8.0
+numpy>=1.24.0
+pillow>=9.5.0
+matplotlib>=3.7.0
+huggingface-hub>=0.16.0
+spaces>=0.25.0
+transformers>=4.30.0
+timm>=0.9.0