Add entrypoint

sllo/Main.py

@@ -0,0 +1,14 @@
+from sllo.Classes import Interface
+
+
+def main() -> None:
+    interface = Interface()
+    try:
+        interface.open()
+    except ValueError as error:
+        print(f"\n{error}")
+        interface.help()
+
+
+if __name__ == "__main__":
+    main()