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/thread-stream/test/unhandledRejection.js

@@ -0,0 +1,21 @@
+'use strict'
+
+const { Writable } = require('stream')
+
+// Nop console.error to avoid printing things out
+console.error = () => {}
+
+setImmediate(function () {
+  Promise.reject(new Error('kaboom'))
+})
+
+async function run (opts) {
+  const stream = new Writable({
+    write (chunk, enc, cb) {
+      cb()
+    }
+  })
+  return stream
+}
+
+module.exports = run