Define default configuration

Problem/Motivation

We need to clarify the following:

• Which scenarios should be available in configuration form
• How should the default configuration of the module look like?

Here is the list of configuration values:

log_level: 6
env: dev
api_timeout: 120
cache_backend_redis: 0
signal_scenarios:
  - drupal/ban
  - drupal/flood
  - drupal/whisper
scenarios:
  - drupal/ban
  - drupal/flood
  - drupal/whisper
  - crowdsecurity/http-backdoors-attempts
  - crowdsecurity/http-bad-user-agent
  - crowdsecurity/http-crawl-non_statics
  - crowdsecurity/http-probing
  - crowdsecurity/http-path-traversal-probing
  - crowdsecurity/http-sensitive-files
  - crowdsecurity/http-sqli-probing
  - crowdsecurity/http-xss-probing
  - crowdsecurity/http-w00tw00t
  - crowdsecurity/http-generic-bf
  - crowdsecurity/http-open-proxy
whisper:
  enable: 1
  leak_speed: 10
  bucket_capacity: 10
  ban_duration: 3600