feature #35732 [FrameworkBundle][HttpKernel] Add session usage reporting in stateless mode (mtarld)

This PR was merged into the 5.1-dev branch.

Discussion
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[FrameworkBundle][HttpKernel] Add session usage reporting in stateless mode

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| License       | MIT
| Doc PR        | TODO

https://github.com/orgs/symfony/projects/1#card-30506005

Provide a `@Stateless` annotation that forbid session usage for annotated controllers (or classes).

## Implementations
**v1**
- ~~New session proxy that allows session to be marked as disabled~~
- ~~New default route attribute: `_stateless` (automatically set by `@Stateless`)~~
- ~~On kernel controller event, if `_stateless` is `true`, session is marked as disabled~~
- ~~Session listener is able to check if the session is disabled and prevent its creation~~

**v2**
- New default route attribute: `_stateless` (automatically set by `@Stateless`)
- On kernel response, check the session usage and if session was used when `_stateless` attribute is set to `true`: Either throw an exception (debug enabled) or log a warning (debug disabled)

Commits
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bc48db2424 [FrameworkBundle][HttpFoundation] Add `_stateless`

Author: fabpot

Resources/config/session.xml

@@ -66,7 +66,9 @@
             <argument type="service_locator">
                 <argument key="session" type="service" id="session" on-invalid="ignore" />
                 <argument key="initialized_session" type="service" id="session" on-invalid="ignore_uninitialized" />
+                <argument key="logger" type="service" id="logger" on-invalid="ignore" />
             </argument>
+            <argument>%kernel.debug%</argument>
         </service>
 
         <!-- for BC -->

Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -504,7 +504,7 @@ public function testNullSessionHandler()
         $this->assertNull($container->getDefinition('session.storage.native')->getArgument(1));
         $this->assertNull($container->getDefinition('session.storage.php_bridge')->getArgument(0));
 
-        $expected = ['session', 'initialized_session'];
+        $expected = ['session', 'initialized_session', 'logger'];
         $this->assertEquals($expected, array_keys($container->getDefinition('session_listener')->getArgument(0)->getValues()));
     }
 
@@ -1301,7 +1301,7 @@ public function testSessionCookieSecureAuto()
     {
         $container = $this->createContainerFromFile('session_cookie_secure_auto');
 
-        $expected = ['session', 'initialized_session', 'session_storage', 'request_stack'];
+        $expected = ['session', 'initialized_session', 'logger', 'session_storage', 'request_stack'];
         $this->assertEquals($expected, array_keys($container->getDefinition('session_listener')->getArgument(0)->getValues()));
     }