added remaining LSL2 entities

LSL2/OIEVENT/CLEAR/MSG_GROUPS..json

@@ -0,0 +1,11 @@
+{
+    "header": {
+        "version": 1,
+        "type": "record"
+    },
+    "body": {
+        "record1": {
+            "<1>": "declare function utility, fieldcount, set_property\r\n\r\nAllControls = utility( 'OBJECTLIST', @window, '' )\r\nAcnt = fieldcount( AllControls, @fm )     \r\nfor i = 1 to Acnt         \r\n   ThisControl = AllControls<i>\r\n   if ThisControl[-6,6] = '_LABEL' or index( ThisControl, 'MENU', 1 ) or index( ThisControl, 'TEXT', 1 ) else\r\n      void = set_property( ThisControl, 'ENABLED', 1 )\r\n   end           \r\nnext i \r\nRETURN 1"
+        }
+    }
+}