Add marker interface for event subscriber autoconfiguration

[alterphp]

Totally copied from doctrine/DoctrineBundle#1119 !

This is first step in order to split Doctriner EventSubscriber autoconfiguration and then resolve conflicts introduced in https://github.com/KnpLabs/DoctrineBehaviors/blob/master/src/Bundle/DependencyInjection/DoctrineBehaviorsExtension.php#L29

[alterphp]

Not sure if line should be adapted too https://github.com/doctrine/DoctrineMongoDBBundle/pull/623/files#diff-21bb4bdcf714a43b98948d9c96f74a1fR96

[malarzm]

@alterphp thanks for the PR and sorry for the long wait!

Not sure if line should be adapted too https://github.com/doctrine/DoctrineMongoDBBundle/pull/623/files#diff-21bb4bdcf714a43b98948d9c96f74a1fR96

What line are you referring to?

Also would you mind adding a note to https://github.com/doctrine/DoctrineMongoDBBundle/blob/master/Resources/doc/events.rst? You may take a page from https://symfony.com/doc/master/bundles/DoctrineMongoDBBundle/first_steps.html#service-repositories

[malarzm]

@alterphp I'm afraid a conflict popped up, can you please rebase your changes atop current master? Also once you'll be rebasing, please squash your commits into 1.

[alterphp]

Yes, i'm not done, i had to switch to m'y dad duties Le dim. 22 mars 2020 à 13:52, Maciej Malarz <notifications@github.com> a écrit :

…

@alterphp <https://github.com/alterphp> I'm afraid a conflict popped up, can you please rebase your changes atop current master? Also once you'll be rebasing, please squash your commits into 1. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#623 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAFULTPW2MALO42FBETUAO3RIYCYHANCNFSM4K7P2MLQ> .

[alterphp]

Not sure if line should be adapted too https://github.com/doctrine/DoctrineMongoDBBundle/pull/623/files#diff-21bb4bdcf714a43b98948d9c96f74a1fR96
What line are you referring to?

@malarzm I do not remember what I was thinking... Sorry. I htink it's ok now !

[malarzm]

Thanks a lot @alterphp!

Yes, i'm not done, i had to switch to m'y dad duties

Sorry then, got a notification about a commit and acted on it :)

[alterphp]

No worries, you could not guess !