Feature/add rule based detector to getting started

[thorinaboenke]

Task

#201

Description

• Add a RuleDetector (detector-rule), running alongside NewValueDetector in the default docker-compose stack
• parser sends parsed logs to both.
• Ship it with R003 - CheckForExceptions, R004 - ErrorLevelFound enabled; R001 - TemplateNotFound, is added while doing the getting started tutorial.
• alerts land in output-rule.%Y%m%d via a second / pair in the existing fluentout container (no second Fluentd container needed
• Add one wildcard template to container/config/templates.txt so normal Nginx access-log lines parse successfully, keeping R001 quiet during normal traffic.
• Update getting_started.md tutorial and docker-compose.md docs and demonstrating a deliberately unparseable log line

How Has This Been Tested?

manually executed the getting started tutorial

Checklist

• This Pull-Request goes to the development branch.
• I have successfully run prek locally.
• I have added tests to cover my changes.
• I have linked the issue-id to the task-description.
• I have performed a self-review of my own code.