added remaining LSL2 entities

LSL2/OIEVENT/CLICK/AR_INV_EXP.BUTTON_1.json

@@ -0,0 +1,11 @@
+{
+    "header": {
+        "version": 1,
+        "type": "record"
+    },
+    "body": {
+        "record1": {
+            "<1>": "declare function ar_inv_exp\r\ndeclare subroutine end_dialog\r\n$insert logical\r\n\r\nInvDateFrom = .inv_date_from->text\r\nInvDateThru = .inv_date_thru->text\r\nPath        = .path->text\r\nRetVar = InvDateFrom:'*':InvDateThru:'*':Path\r\nVoid = ar_inv_exp( RetVar, True$ )\r\nend_dialog( @window, '' )\r\nRETURN 0"
+        }
+    }
+}