Access control configuration

[nusje2000]

Based on a solution mentioned in this comment.

There should be a way of guarding routes via a configuration file. The definition of this configuration should look a bit like the way you define security access control within symfony:

nusje2000_feature_toggle:
    access_control:
        - {path: ^/path-1, features: {feature_1: true}} # will only be accessible if feature_1 is enabled
        - {path: ^/path-2, features: {feature_2: false}} # will only be accessible if feature_2 is disabled

[nvdbeek]

@nusje2000 this is already supported in your package.