[JENKINS-37241] Support for query parameters in autocomplete

[timja]

See JENKINS-37241.

Testing done

Verified that existing usages in core are unaffected:

1. Creating a logger and having logger names suggested. This one is a good test as it doesn't have a descriptor behind it as well.
2. Copy from in a new job

Created a change in Azure VM agents jenkinsci/azure-vm-agents-plugin#580 which uses the depends on functionality to access query parameters

Proposed changelog entries

• Developer: Add support for @QueryParameter to the autocomplete component
• Change autocomplete component to use POST for sending requests

Proposed upgrade guidelines

N/A

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[timja]

I thought about whether this should be a different attribute name, e.g. autocompleteFillDependsOn but I couldn't see when they would ever clash so I just left it as the same name

[timja]

copied from hudson-behaviour.js for the doCheck functionality.

It uses query string by default and then if the method is post it converts to parameters, (which is the default)

I didn't see any reason for there to need to be an option for get, I'm not aware of it ever being used for the doChecks