added your first streamlit_app

streamlit_apps/01-first-streamlit-app/main.py

@@ -0,0 +1,22 @@
+import streamlit as st
+
+st.title("Your First Streamlit App")
+
+name = st.text_input("Enter your name:")
+age = st.number_input("Enter your age: ", min_value=0, max_value=120, step=1)
+
+color = st.selectbox("Select your favorite color: ", ["Red", "Yellow", "Orange", "Blue", "Green"])
+
+show_more = st.checkbox("Show more information")
+
+if st.button("Submit"):
+    age_in_dog_years = age * 7
+    st.write(f"Hello, {name}")
+    st.write(f"You are {age} years old, which is {age_in_dog_years} years old in dog years.")
+    st.write(f"Your favorite color is {color}.")
+
+if show_more:
+    st.write("Here's more information just for you!")
+    st.write("Dogs typically live to be around 10-13 years old in human years.")
+
+