feature #35690 [Notifier] Add Free Mobile notifier (noniagriconomie)

This PR was merged into the 5.1-dev branch.

Discussion
----------

[Notifier] Add Free Mobile notifier

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Tickets       | Implements symfony/symfony-docs#13025 (review)
| License       | MIT
| Doc PR        | Will document if accepted (see **Usage** below)

## Add a new notifier (SMS) with the French Free Mobile provider.

It is a **special notifier** as it **only send the SMS to the self user**,
but I think it can be **useful for notification alerting purposes** (the way I use it already, and plan to use it with the component)

---

**Provider doc:** (🇫🇷 sorry)

https://mobile.free.fr/moncompte/index.php?page=options

<img width="716" alt="1" src="https://user-images.githubusercontent.com/13205768/74357784-b55c3500-4dc0-11ea-95ba-19ded062e800.png">

<img width="431" alt="2" src="https://user-images.githubusercontent.com/13205768/74357786-b7be8f00-4dc0-11ea-837e-b922c20e9a2e.png">

---

**Usage:**

```
// .env file
FREEMOBILE_DSN=freemobile://LOGIN:PASSWORD@default?phone=PHONE
```

where:
 - `LOGIN` is your Free Mobile login
 - `PASSWORD` is the token displayed in the config panel
- `PHONE` is your Free Mobile phone number

```yaml
// config/packages/notifiers.yaml file
framework:
    notifier:
        texter_transports:
            freemobile: '%env(FREEMOBILE_DSN)%'
```

Then you can then use it like documented here https://symfony.com/doc/current/notifier/texters.html

ℹ️ As this is a special notifier, the `PHONE` provided inside the DSN mut be the same used [here](https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Notifier/Message/SmsMessage.php#L31) for `$phone` value

---

Voilà!

Commits
-------

1b8709ee72 Add Free Mobile notifier

Author: fabpot

Exception/UnsupportedSchemeException.php

@@ -50,6 +50,10 @@ class UnsupportedSchemeException extends LogicException
             'class' => Bridge\Firebase\FirebaseTransportFactory::class,
             'package' => 'symfony/firebase-notifier',
         ],
+        'freemobile' => [
+            'class' => Bridge\FreeMobile\FreeMobileTransportFactory::class,
+            'package' => 'symfony/freemobile-notifier',
+        ],
         'ovhcloud' => [
             'class' => Bridge\OvhCloud\OvhCloudTransportFactory::class,
             'package' => 'symfony/ovhcloud-notifier',

Transport.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Notifier;
 
 use Symfony\Component\Notifier\Bridge\Firebase\FirebaseTransportFactory;
+use Symfony\Component\Notifier\Bridge\FreeMobile\FreeMobileTransportFactory;
 use Symfony\Component\Notifier\Bridge\Mattermost\MattermostTransportFactory;
 use Symfony\Component\Notifier\Bridge\Nexmo\NexmoTransportFactory;
 use Symfony\Component\Notifier\Bridge\OvhCloud\OvhCloudTransportFactory;
@@ -48,6 +49,7 @@ class Transport
         OvhCloudTransportFactory::class,
         FirebaseTransportFactory::class,
         SinchTransportFactory::class,
+        FreeMobileTransportFactory::class,
     ];
 
     private $factories;