RFR: 7167: Agent Plugin [v6]

[Marcus Hirt]

On Wed, 28 Apr 2021 17:57:17 GMT, Joshua Matsuoka <jmatsuoka at openjdk.org> wrote:

>> This PR adds the Agent Plugin to JMC. This is a plugin for controlling the jmc agent and provides a way to attach it and add probes to any JVMs in the JVM browser, as well as providing a preset manager for creating/modifying probe presets.
>> 
>> There is still a small amount of cleanup to be done so I'll mark it as a draft for now but it would be great to get a review :)
>
> Joshua Matsuoka has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix rcp feature to use new agent plugin name

Marked as reviewed by hirt (Lead).

-------------

PR: https://git.openjdk.java.net/jmc/pull/226