[Routing] Add 4.0 folder, revert changes made in 3.3

Author: marek-pietrzak-tg

symfony/routing/3.3/config/routes.yaml

@@ -1,3 +1,3 @@
 #index:
 #    path: /
-#    controller: App\Controller\DefaultController::index
+#    defaults: { _controller: 'App\Controller\DefaultController::index' }

symfony/routing/4.0/config/packages/dev/routing.yaml

@@ -0,0 +1,3 @@
+framework:
+    router:
+        strict_requirements: true

symfony/routing/4.0/config/packages/routing.yaml

@@ -0,0 +1,3 @@
+framework:
+    router:
+        strict_requirements: ~

symfony/routing/4.0/config/routes.yaml

@@ -0,0 +1,3 @@
+#index:
+#    path: /
+#    controller: App\Controller\DefaultController::index

symfony/routing/4.0/manifest.json

@@ -0,0 +1,6 @@
+{
+    "copy-from-recipe": {
+        "config/": "%CONFIG_DIR%/"
+    },
+    "aliases": ["router"]
+}