dev-api: add developer portal, OpenAPI spec, and Flatenbadet case study

- New /developers/ page with API docs, SDKs, pricing, use cases
- OpenAPI 3.0 spec for Orders, Missions, Photos, Analytics
- Case study: Glasskiosken i Flatenbadet — complete ROI analysis
- Updated /order/ with recurring missions and frequency dropdown

services/frilans-payout/node_modules/pino-std-serializers/lib/res.js

@@ -0,0 +1,47 @@
+'use strict'
+
+module.exports = {
+  mapHttpResponse,
+  resSerializer
+}
+
+const rawSymbol = Symbol('pino-raw-res-ref')
+const pinoResProto = Object.create({}, {
+  statusCode: {
+    enumerable: true,
+    writable: true,
+    value: 0
+  },
+  headers: {
+    enumerable: true,
+    writable: true,
+    value: ''
+  },
+  raw: {
+    enumerable: false,
+    get: function () {
+      return this[rawSymbol]
+    },
+    set: function (val) {
+      this[rawSymbol] = val
+    }
+  }
+})
+Object.defineProperty(pinoResProto, rawSymbol, {
+  writable: true,
+  value: {}
+})
+
+function resSerializer (res) {
+  const _res = Object.create(pinoResProto)
+  _res.statusCode = res.headersSent ? res.statusCode : null
+  _res.headers = res.getHeaders ? res.getHeaders() : res._headers
+  _res.raw = res
+  return _res
+}
+
+function mapHttpResponse (res) {
+  return {
+    res: resSerializer(res)
+  }
+}