Remove DG scripts in favor of Python scripting

lib/scripts/sample_echo.py

@@ -0,0 +1,14 @@
+# Room echo script example (attach to a room trigger)
+
+def on_trigger(event):
+    # Room entity the script is attached to.
+    room = event["self"]
+
+    while True:
+        # Pick between two messages using a dice roll.
+        if mud.roll("1d2") == 1:
+            mud.echo_room(room, "someone spills a drink at the bar")
+        else:
+            mud.echo_room(room, "a game of cards gets rowdy as a dwarf slams a fist on a table")
+        # Wait before the next echo.
+        mud.sleep(60)