added file sctructure

backend/main.py

@@ -1,3 +1,6 @@
-# Python backend for a calender for my friend group. 
+# Python backend for a calender for my friend group.
 # We had the problem of never agreeing when or where
-# we should meet up, and I hope this fixes the problem. 
+# we should meet up, and I hope this fixes the problem.
+
+import fastapi
+import time