Add application file

app.py

@@ -0,0 +1,12 @@
+import streamlit as st
+#from streamlit_extras.app_logo import add_logo
+
+#add_logo("https://github.com/disi-unibo-nlp/nlg-metricverse/blob/main/figures/spaces.png")
+
+def home():
+    st.title("🌌 NLG-Metricverse")
+    st.write(
+        "Welcome to the 🌌 NLG-Metricverse! NLG Metricverse is an end-to-end Python library for NLG evaluation, devised to provide a living unified codebase for fast application, analysis, comparison, visualization, and prototyping of automatic metrics."
+    )
+
+home()