Add information to the response

[aschix]

trafficstars

There was already a discussion in https://issues.apache.org/jira/browse/SOLR-7539 about a configurable option whether to actually apply the modified q/fq automatically or show it as option in the response.

I am working on a version of the plugin that do that. It takes a config / request parameter autofilter.enable=true/false, and it writes information to a section in the response:

autofiltersection.json.txt

[aschix]

I can submit a pull request when I have things done?