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/sonic-boom/fixtures/firehose.js

@@ -0,0 +1,22 @@
+'use strict'
+
+const SonicBoom = require('..')
+
+const out = new SonicBoom({ fd: process.stdout.fd })
+const str = Buffer.alloc(1000).fill('a').toString()
+
+let i = 0
+
+function write () {
+  if (i++ === 10) {
+    return
+  }
+
+  if (out.write(str)) {
+    write()
+  } else {
+    out.once('drain', write)
+  }
+}
+
+write()