Create app for triangular array of boxes

Examples/triangular/app.py

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+import streamlit as st
+from stmol import showmol,add_box
+import py3Dmol
+#In this example, we will explore how to work with the add_box function to create boxes.
+#For this a colection of boxes is created in a double for loop. Because why not?
+
+scene=py3Dmol.view(width=800,height=800) # Create a scene by defining a blank view
+# In the following for loops, we create many boxes of different colors
+for i in range(20):
+    ii=i*10
+    for j in range(10):
+        jj=j*10
+        if jj>ii: # This is to build boxes only for diagonal and above
+            add_box(scene,bxc=[ii,jj,0],bxd=[10,10,10],boxColor=ii*693870+jj*10,boxOpacity=1.0)
+scene.zoomTo() # This makes the scene zoom to the boxes
+showmol(scene,width=800,height=800) # This shows the scene in the streamlit web app