added remaining LSL2 entities

LSL2/OIEVENT/CLOSE/INVOICE..json

@@ -0,0 +1,11 @@
+{
+    "header": {
+        "version": 1,
+        "type": "record"
+    },
+    "body": {
+        "record1": {
+            "<1>": "declare function post_event, check_notes\r\ndeclare subroutine forward_event\r\n\r\nif get_property( @window, '@CalledFromOrder' ) then\r\n    Void = post_event( 'ORDER', 'CLOSE', '' )\r\nend\r\nforward_event( CancelFlag )\r\nVoid = check_notes()\r\nRETURN 0\r\n\r\n"
+        }
+    }
+}