Add Camel JBang plugins support

[gansheer]

Jbang's Camel implementation already allows users to prototype camel applications easilly. It's current integration in Citrus JBang already allows to write/run tests.

Camel Jbang come with a plugin capability that allows to add plugins and profide additional commands for the Camel Jbang script. As such adding its support in citrus would allow to create/run tests for fast prototyping thats use these plugins.

To support the plugin we need a way to install the plugin and use its associated command.

Additional context
A Camel Jbang plugin can be added with the following command:

$ camel plugin add <my-plugin>

Using the Camel JBang kubernetes plugin :

# Installation
$ camel plugin add kubernetes
$ camel plugin get
 NAME        COMMAND     DEPENDENCY                                      DESCRIPTION                          
 kubernetes  kubernetes  org.apache.camel:camel-jbang-plugin-kubernetes  Run Camel applications on Kubernetes

# Run an integration in a pre-installed kubernetes
$ camel kubernetes run my-integration.yaml

[gansheer]

Can you assign it to me ? I am currently working on this.