feat: include raw data in delivery payload (#55)

Make the payload include the raw data of the delivery body. (Closes #9) (Closes #5)

lib/server.js

@@ -32,6 +32,17 @@ module.exports = (testRoute) => {
     app.use(require('express-sslify').HTTPS({ trustProtoHeader: true }))
   }
 
+  app.use((req, res, next) => {
+    var buf = ''
+    req.on('data', (chunk) => {
+      buf += chunk
+    })
+    req.on('end', () => {
+      req.rawdata = buf
+    })
+    next()
+  })
+
   app.use(cors())
   app.use(express.json())
   app.use(express.urlencoded({ extended: true }))
@@ -100,6 +111,7 @@ module.exports = (testRoute) => {
       payload: {
         ...req.headers,
         body: req.body,
+        rawdata: req.rawdata,
         query: req.query,
         timestamp: Date.now()
       }