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/globals/index.d.ts

@@ -0,0 +1,6 @@
+import {ReadonlyDeep} from 'type-fest';
+import globalsJson = require('./globals.json');
+
+declare const globals: ReadonlyDeep<typeof globalsJson>;
+
+export = globals;