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/pino/build/sync-version.js

@@ -0,0 +1,10 @@
+const fs = require('fs')
+const path = require('path')
+const { version } = require('../package.json')
+
+const metaContent = `'use strict'
+
+module.exports = { version: '${version}' }
+`
+
+fs.writeFileSync(path.resolve('./lib/meta.js'), metaContent, { encoding: 'utf-8' })