Limit local status and result logs and queries

[javuto]

Overview

Implementing #19 to keep logs locally in the database for a number of hours or number of entries.

• Added option to enable the removal of status logs, called clean_status_logs and also clean_status_interval as integer which will have the number of seconds to hold status logs for in the backend.
• Added option to enable the removal of result logs, called clean_result_logs and also clean_result_interval as integer which will have the number of seconds to hold result logs for in the backend.
• Added option to enable the removal of queries, query logs, query executions and query targets, called clean_query_logs and also clean_query_entries as integer which will have the number of entries to hold queries in the backend.

⚠️ If you enable this settings, and you do not have an additional logging mechanism (splunk, graylog) enabled, the logs will be removed from the backend and therefore lost. ⚠️