Improve compatibility with laravel service providers

[NicklasWallgren]

No description provided.

[mabasic]

Why do we need a config_path function in this package?

[NicklasWallgren]

It's a pretty commonly used method in service providers, and lumen doesn't include this method and therefore a few libs won't work out-of-the-box while running vendor:publish.

For example https://github.com/avto-dev/roadrunner-laravel/blob/master/src/ServiceProvider.php.

Others has encountered this issue before me.
#5

[mabasic]

I see. Thank you for explaining. It would make sense to include this helper function considering what this package does, but to keep this package simple (being a direct copy) and prevent adding bloat I don't want to add this now.

When the user (Developer) is faced with this error complaining about missing config_path function, it is always possible to add one themselves in their application. Some people don't need it and it would pollute their global functions.