Node start abstraction

[moesterheld]

Description

Initial draft for creating a common bootstrapping for starting all kinds of nodes.

So far, removes CmdLineTool and replaces it with a AbstractNodeBootstrap which accepts any kind of configuration.
This should be used in combination with the AbstractNodeCommand to configure and start any kind of node with the required bindings and configs.

Work in progress
TODOs:

• create a common bootstrapping for nodes with preflight (Graylog/data node)
• change all existing commands to use command abstraction
• clean up bindings
• tests
• remove ExampleCommand and example config

/jpd https://github.com/Graylog2/graylog-plugin-enterprise/pull/7316
/nocl

Motivation and Context

remove duplicate code, provide common startup mechanism #18011 , #18908

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (non-breaking change)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.