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/loupe/lib/set.js

@@ -0,0 +1,16 @@
+import { inspectList } from './helpers'
+
+// IE11 doesn't support `Array.from(set)`
+function arrayFromSet(set) {
+  const values = []
+  set.forEach(value => {
+    values.push(value)
+  })
+  return values
+}
+
+export default function inspectSet(set, options) {
+  if (set.size === 0) return 'Set{}'
+  options.truncate -= 7
+  return `Set{ ${inspectList(arrayFromSet(set), options)} }`
+}