webhook增加type参数：默认值为softbot

src/main/java/com/gitlink/softbot/vo/Webhook.java

@@ -25,4 +25,10 @@ public class Webhook {
     private String branch_filter;
 
     private Object[] events;
+
+    private String type;
+
+    public String getType() {
+        return "softbot";
+    }
 }