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/vitest/dist/path.js

@@ -0,0 +1,7 @@
+import url from 'node:url';
+import { resolve } from 'pathe';
+
+const rootDir = resolve(url.fileURLToPath(import.meta.url), "../../");
+const distDir = resolve(url.fileURLToPath(import.meta.url), "../../dist");
+
+export { distDir, rootDir };