Clean up middleware; solidify support for route handler classes

app/http/middleware/Test.middleware.ts

@@ -1,5 +1,12 @@
 import Middleware from '../../../lib/src/http/Middleware.ts'
+import {Request} from '../../../lib/src/http/Request.ts'
+import {http} from '../../../lib/src/http/response/helpers.ts'
+import {HTTPStatus} from '../../../lib/src/const/http.ts'
 
 export default class TestMiddleware extends Middleware {
-
+    public async handleRequest(request: Request) {
+        if ( Math.random() >= 0.5 ) {
+            return http(HTTPStatus.FORBIDDEN, 'Well, you were unlucky.')
+        }
+    }
 }