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-pretty/lib/utils/create-date.js

@@ -0,0 +1,26 @@
+'use strict'
+
+module.exports = createDate
+
+const isValidDate = require('./is-valid-date')
+
+/**
+ * Constructs a JS Date from a number or string. Accepts any single number
+ * or single string argument that is valid for the Date() constructor,
+ * or an epoch as a string.
+ *
+ * @param {string|number} epoch The representation of the Date.
+ *
+ * @returns {Date} The constructed Date.
+ */
+function createDate (epoch) {
+  // If epoch is already a valid argument, return the valid Date
+  let date = new Date(epoch)
+  if (isValidDate(date)) {
+    return date
+  }
+
+  // Convert to a number to permit epoch as a string
+  date = new Date(+epoch)
+  return date
+}