Message Table: Create a pipline rule from a Message Table

## What?
When opening up a message, it should be possible to create a pipeline rule with precisely this message. Similar to
`Test against Stream.` After opening a message, there should be a button: `Open for Pipeline Rule,` the
pipeline Rule builder would open up with this message loaded in JSON format.

## Why?
Right now, I need to copy the message, go to the pipeline rule builder, and paste the message. And I need to
If I copy the message, I get the JSON format needed.

## Your Environment
* Graylog Version: Graylog Cloud 6.1.8 (589)