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/tinyspy/README.md

@@ -0,0 +1,12 @@
+
+# tinyspy
+
+> minimal fork of nanospy, with more features 🕵🏻‍♂️
+
+A `10KB` package for minimal and easy testing with no dependencies.
+This package was created for having a tiny spy library to use in `vitest`, but it can also be used in `jest` and other test environments.
+
+_In case you need more tiny libraries like tinypool or tinyspy, please consider submitting an [RFC](https://github.com/tinylibs/rfcs)_
+
+## Docs
+Read **[full docs](https://github.com/tinylibs/tinyspy#readme)** on GitHub.