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/create-and-exit.js

@@ -0,0 +1,16 @@
+'use strict'
+
+const { join } = require('path')
+const ThreadStream = require('..')
+
+const stream = new ThreadStream({
+  filename: join(__dirname, 'to-file.js'),
+  workerData: { dest: process.argv[2] },
+  sync: true
+})
+
+stream.write('hello')
+stream.write(' ')
+stream.write('world\n')
+stream.flushSync()
+stream.unref()