feature #60232 Add PHP config support for routing (fabpot)

This PR was squashed before being merged into the 7.3 branch.

Discussion
----------

Add PHP config support for routing

| Q             | A
| ------------- | ---
| Branch?       | 7.3
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Issues        | n/a
| License       | MIT

This is the first to stop using XML for the routing configuration provided by core bundles. We did the same for all other configuration files a while ago, so this is really the last step.

Commits
-------

2a5aa45b1ea Deprecate using XML routing configuration files
2491a282d50 Add PHP config support for routing

Author: fabpot

CHANGELOG.md

@@ -4,6 +4,7 @@ CHANGELOG
 7.3
 ---
 
+ * Add `errors.php` and `webhook.php` routing configuration files (use them instead of their XML equivalent)
  * Add support for the ObjectMapper component
  * Add support for assets pre-compression
  * Rename `TranslationUpdateCommand` to `TranslationExtractCommand`

Resources/config/routing/errors.php

@@ -0,0 +1,20 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;
+
+return function (RoutingConfigurator $routes): void {
+    $routes->add('_preview_error', '/{code}.{_format}')
+        ->controller('error_controller::preview')
+        ->defaults(['_format' => 'html'])
+        ->requirements(['code' => '\d+'])
+    ;
+};

Resources/config/routing/errors.xml

@@ -4,9 +4,5 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://symfony.com/schema/routing https://symfony.com/schema/routing/routing-1.0.xsd">
 
-    <route id="_preview_error" path="/{code}.{_format}">
-        <default key="_controller">error_controller::preview</default>
-        <default key="_format">html</default>
-        <requirement key="code">\d+</requirement>
-    </route>
+    <import resource="errors.php" type="php" />
 </routes>

Resources/config/routing/webhook.php

@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;
+
+return function (RoutingConfigurator $routes): void {
+    $routes->add('_webhook_controller', '/{type}')
+        ->controller('webhook_controller::handle')
+        ->requirements(['type' => '.+'])
+    ;
+};

Resources/config/routing/webhook.xml

@@ -4,8 +4,5 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://symfony.com/schema/routing https://symfony.com/schema/routing/routing-1.0.xsd">
 
-    <route id="_webhook_controller" path="/{type}">
-        <default key="_controller">webhook.controller::handle</default>
-        <requirement key="type">.+</requirement>
-    </route>
+    <import resource="webhook.php" type="php" />
 </routes>