feature #37830 [Notifier] Add LinkedIn provider (ismail1432)

This PR was merged into the 5.2-dev branch.

Discussion
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[Notifier] Add LinkedIn provider

| Q             | A
| ------------- | ---
| Branch?       | master for features 5.2
| Bug fix?      | no
| New feature?  | yes/no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | yes/no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | Fix #34563 <!-- prefix each issue number with "Fix #", no need to create an issue if none exist, explain below instead -->
| License       | MIT
| Doc PR        | symfony/symfony-docs#... <!-- required for new features -->

### Add the LinkedIn provider for the Notifier

Few months ago I created a bridge to send message to LinkedIn, following [the discussion here](symfony/symfony#34563) I create the PR.

If you're curious [I wrote an article where I use the bridge](https://medium.com/@smaine.milianni/aws-lambda-and-symfony-6d3e9831c3cd)

[Edit] test are green ~missing improvement body construction and integration test with update changes + framework integration~

[Notification sent with this PR](https://www.linkedin.com/posts/smainemilianni_hello-linkedin-from-symfony-bridge-see-pull-activity-6700328970665177088-31tT)
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Commits
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0064cae9a0 add Linkedin transport and option

Author: fabpot

Resources/config/notifier_transports.php

@@ -15,6 +15,7 @@
 use Symfony\Component\Notifier\Bridge\FreeMobile\FreeMobileTransportFactory;
 use Symfony\Component\Notifier\Bridge\GoogleChat\GoogleChatTransportFactory;
 use Symfony\Component\Notifier\Bridge\Infobip\InfobipTransportFactory;
+use Symfony\Component\Notifier\Bridge\LinkedIn\LinkedInTransportFactory;
 use Symfony\Component\Notifier\Bridge\Mattermost\MattermostTransportFactory;
 use Symfony\Component\Notifier\Bridge\Mobyt\MobytTransportFactory;
 use Symfony\Component\Notifier\Bridge\Nexmo\NexmoTransportFactory;
@@ -38,6 +39,10 @@
             ->parent('notifier.transport_factory.abstract')
             ->tag('chatter.transport_factory')
 
+        ->set('notifier.transport_factory.linkedin', LinkedInTransportFactory::class)
+            ->parent('notifier.transport_factory.abstract')
+            ->tag('chatter.transport_factory')
+
         ->set('notifier.transport_factory.telegram', TelegramTransportFactory::class)
             ->parent('notifier.transport_factory.abstract')
             ->tag('chatter.transport_factory')