Add levels or "log only" option

Problem/Motivation

Sometimes it makes sense to first check, which requests will get banned, before enabling the hard ban. Example case is 📌 Google & Bing Crawler bot blocked by requesting /wp-login.php Active

Or the other way around: You need to disable blocking for some time for cases like this.

Steps to reproduce

Proposed resolution

Add levels or an option to "Log only" without banning the IPs. This should simply create the watchdog entries, but not execute the banning.

Might be also an alternative to disable the funtionality entirely ("Enabled" checkbox).

Maybe best would be to have:

• Disabled
• Log only
• Block & Log

Remaining tasks

User interface changes

API changes

Data model changes