WIP Separation of Bundle and Library

[smurfy]

This is my work in progress of separating Library and Bundle.

This PR also includes #141 and #142

The library part is available here: https://github.com/smurfy/RMSPushNotifications
Tested only iOS and FCM Handlers, but if i did no typo it should work.

I marked this Issue WIP because i removed some stuff and changed things and i want to open a discussion about these things.

1. Removed logger as hard dependency. It filled my log's with errors i already handled with the result of ->send(). I probably will implement this by adding a global config variable allowing the user to set the logger service. logger service because this allows to set a separate channel logger if required. This was the main reason to do this PR in the first place.
2. I removed the set PEM as string feature. This has multiple reasons, kind of a hack in notifications class, needs cleanup.... I'm happy to implement it again (hopefully better) if i understand the need for this feature.
3. If i find the time i add unit tests for the Handlers

The PR can be tested by adding this to the composer.json

 "richsage/rms-push-notifications" : "dev-master",
 "richsage/rms-push-notifications-bundle" : "dev-master",

and

"repositories": [
    {
        "type": "vcs",
        "url": "https://github.com/smurfy/RMSPushNotifications"
    },
    {
        "type": "vcs",
        "url": "https://github.com/smurfy/RMSPushNotificationsBundle.git"
    }
 ],

[toriqo]

what's this doing here?

[toriqo]

remove the dump from Notifications.php

[smurfy]

Not sure where are you looking, but the file does not exist anymore at all (in the bundle part)
Even in the library part that dump does not exist.

https://github.com/smurfy/RMSPushNotificationsBundle
https://github.com/smurfy/RMSPushNotifications