feature #36479 [Notifier][WebProfilerBundle][FrameworkBundle] Add notifier section to profiler (jschaedl)

This PR was squashed before being merged into the 5.2-dev branch.

Discussion
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[Notifier][WebProfilerBundle][FrameworkBundle] Add notifier section to profiler

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | yes <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | - <!-- prefix each issue number with "Fix #", if any -->
| License       | MIT
| Doc PR        | - <!-- required for new features -->

This is the first iteration of adding a profiler panel for the new Notifier component:

WebProfiler Toolbar:
![Screenshot 2020-10-02 at 10 26 35](https://user-images.githubusercontent.com/1880467/94903474-28bece00-049a-11eb-945c-d6ce047b35e8.png)

WebProfiler Notifier Panel:

![Screenshot 2020-10-02 at 10 28 19](https://user-images.githubusercontent.com/1880467/94903594-5277f500-049a-11eb-8c1e-27e6ec87a51c.png)
![Screenshot 2020-10-02 at 10 28 29](https://user-images.githubusercontent.com/1880467/94903591-51df5e80-049a-11eb-935a-9ba130ef69f0.png)
![Screenshot 2020-10-02 at 10 28 35](https://user-images.githubusercontent.com/1880467/94903589-5146c800-049a-11eb-8a69-28d362ef6640.png)
![Screenshot 2020-10-02 at 10 28 42](https://user-images.githubusercontent.com/1880467/94903586-50159b00-049a-11eb-97bd-382a823087a6.png)

An example project can to test the new profiler panel can be found here: https://github.com/jschaedl/notifier-profiler-integration

Commits
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f39e74ba9f [Notifier][WebProfilerBundle][FrameworkBundle] Add notifier section to profiler

Author: fabpot

Resources/config/notifier_debug.php

@@ -17,5 +17,6 @@
     $container->services()
         ->set('notifier.data_collector', NotificationDataCollector::class)
             ->args([service('notifier.logger_notification_listener')])
+            ->tag('data_collector', ['template' => '@WebProfiler/Collector/notifier.html.twig', 'id' => 'notifier'])
     ;
 };