Add transformers example

packages/sharing-editor/public/samples/023_transformers/app.py

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+import streamlit as st
+
+from transformers_js_py import pipeline
+
+st.title("Sentiment analysis")
+
+text = st.text_input("Input some text", "I love transformers!")
+
+if text:
+    with st.spinner():
+        if "pipe" not in st.session_state:
+            st.session_state["pipe"] = await pipeline('sentiment-analysis')
+        pipe = st.session_state["pipe"]
+        out = await pipe(text)
+    st.write(out)

packages/sharing-editor/public/samples/023_transformers/requirements.txt

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+transformers-js-py

packages/sharing-editor/public/samples/023_transformers/stlite.json

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+{
+  "title": "Transformers",
+  "entrypoint": "app.py"
+}