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/ajv/lib/dot/const.jst

@@ -0,0 +1,11 @@
+{{# def.definitions }}
+{{# def.errors }}
+{{# def.setupKeyword }}
+{{# def.$data }}
+
+{{? !$isData }}
+  var schema{{=$lvl}} = validate.schema{{=$schemaPath}};
+{{?}}
+var {{=$valid}} = equal({{=$data}}, schema{{=$lvl}});
+{{# def.checkError:'const' }}
+{{? $breakOnError }} else { {{?}}