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/regexp.js

@@ -0,0 +1,8 @@
+import { truncate } from './helpers'
+
+export default function inspectRegExp(value, options) {
+  const flags = value.toString().split('/')[2]
+  const sourceLength = options.truncate - (2 + flags.length)
+  const source = value.source
+  return options.stylize(`/${truncate(source, sourceLength)}/${flags}`, 'regexp')
+}