Optimize debugging performance

Problem/Motivation

When either ECA debugging or webprofiler is enabled, we can run into timeouts or at least long page requests because of the build process of token information in \Drupal\eca\ConfigurableLoggerChannel::getTokenInfo

Proposed resolution

This is a method that's being called recursively for every single token on the token stack, for each logger call by ECA on a single page request. That happens a lot!!! And if the token list is long or tokens are complex (like e.g. forms), then collecting that information is a comprehensive task.

At the same time, the result of that process is the same most of the time. We should consider ways to optimize this by only re-collecting information if an object has changed - if we ever get a chance to recognize changes.