Add Mocky (#2359)

README.md

@@ -450,6 +450,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Lua Decompiler](https://lua-decompiler.ferib.dev/) | Online Lua 5.1 Decompiler | No | Yes | Yes |
 | [MAC address vendor lookup](https://macaddress.io/api) | Retrieve vendor details and other information regarding a given MAC address or an OUI | `apiKey` | Yes | Yes |
 | [MicroENV](https://microenv.com/) | Fake Rest API for developers | No | Yes | Unknown |
+| [Mocky](https://designer.mocky.io/) | Mock user defined test JSON for REST API endpoints | No | Yes | Yes |
 | [Nationalize.io](https://nationalize.io) | Estimate the nationality of a first name | No | Yes | Yes |
 | [OneSignal](https://documentation.onesignal.com/docs/onesignal-api) | Self-serve customer engagement solution for Push Notifications, Email, SMS & In-App | `apiKey` | Yes | Unknown |
 | [OOPSpam](https://oopspam.com/) | Multiple spam filtering service | No | Yes | Yes |