Add Domain middleware

utils/middleware/domain.ts

@@ -0,0 +1,15 @@
+import { pogo } from "../../deps.ts"
+interface RequestParameters { r: pogo.Request, h: pogo.Toolkit }
+
+export default ({ r, h }: RequestParameters, domains: string[] | string, handler: any) => {
+    if (domains.includes(r.host) || domains.includes("*")) {
+        console.log("Call actual Handler")
+        return handler(r, h)
+
+    } else {
+        console.log("Throw Error")
+        return h.response({
+            error: "This Site/Fuction doesn't exist or is not available on the current domain."
+        }).code(404)
+    }
+}