add global webhook method selector

libs/notifications/webhook.js

@@ -240,8 +240,30 @@ module.exports = function(s,config,lang,getSnapshot){
                "placeholder": "http://your-webhook-point/onEvent/{{INNER_EVENT_TITLE}}?info={{INNER_EVENT_INFO}}",
                "field": lang["Webhook URL"],
                "form-group-class":"u_global_webhook_input u_global_webhook_1",
+           },
+           {
+                hidden: true,
+                "name": "detail=global_webhook_method",
+               "field": lang['Call Method'],
+               "default": "GET",
+               "form-group-class":"u_global_webhook_input u_global_webhook_1",
+               "fieldType": "select",
+               "possible": [
+                   {
+                      "name": `GET (${lang.Default})`,
+                      "value": "GET"
+                   },
+                   {
+                      "name": "PUT",
+                      "value": "PUT"
+                   },
+                   {
+                      "name": "POST",
+                      "value": "POST"
                    }
                 ]
+            },
+        ]
     }
     s.definitions["Event Filters"].blocks["Action for Selected"].info.push({
              "name": "actions=global_webhook",