feat: add japanpost & fix: update joinus content (#2901)

lib/router.js

@@ -1581,6 +1581,9 @@ router.get('/leboncoin/ad/:query', require('./routes/leboncoin/ad.js'));
 // DHL
 router.get('/dhl/:id', require('./routes/dhl/shipment-tracking'));
 
+// Japanpost
+router.get('/japanpost/:reqCode', require('./routes/japanpost/index'));
+
 // 中华人民共和国商务部
 router.get('/mofcom/article/:suffix', require('./routes/mofcom/article'));