feat:增加杠杆设置

@@ -67,6 +67,13 @@ class Api
         $method = "POST";
         return $this->request($method, $url, $params, $this->apiInfo);
     }
+    //设置杠杆
+    public function setLever($params)
+    {
+        $url = "/fapi/v1/leverage";
+        $method = "POST";
+        return $this->request($method, $url, $params, $this->apiInfo);
+    }
 
     //------------------------------------
 

@@ -129,4 +129,8 @@ class ExBroker
     {
         return $this->api->placeOrder($params);
     }
+    public function setLever($symbol, $lever)
+    {
+        return $this->api->setLever(['symbol' => $symbol, 'leverage' => $lever]);
+    }
 }