Add settings to the devel configuration page

Problem/Motivation

Great module, thank you!

Wouldn't it make sense to be able to enable / disable these options on the Devel settings page? So you could use them, when you need them. I'm not sure, if it's possible, but if we could configure the \Kint::$depth_limit at runtime and select the value on the Devel settings page, that would be a real benefit.

Steps to reproduce

Proposed resolution

Allow to configure the functionalities on the Devel configuration page by altering the settings form

Remaining tasks

User interface changes

API changes

Data model changes