Add mecanism avoid listening to router event

[cyril-colin]

Hi !
Thank you for this great library. I would like to know if it's possible to disable the feature that automatically record PageView event on router navigation events. In my case this data isn't useful and I don't want to have useless http requests in my project.

Is it possible to add this in the module configuration or in parameters of the initialize function ?

Thanks !

[NielsCodes]

@cyril-colin I've added this feature, but I'm unable to fully test it right now due to issues in Facebook business manager. Once I'm able to confirm it works as anticipated, I'll update the docs and push a new release :)