Add capabilities: xpp3, jaxb-core, jaxb-impl

[jjohannes]

Discovered these in a project that can be added to this plugin:

jvmDependencyConflicts {
    patch {
        module("org.ogce:xpp3") { addCapability("xpp3:xpp3") }
        module("org.glassfish.jaxb:jaxb-core") { addCapability("com.sun.xml.bind:jaxb-core") }
        module("org.glassfish.jaxb:jaxb-runtime") { addCapability("com.sun.xml.bind:jaxb-impl") }
    }
    conflictResolution {
        select("com.sun.xml.bind:jaxb-core", "com.sun.xml.bind:jaxb-core")
        select("com.sun.xml.bind:jaxb-impl", "com.sun.xml.bind:jaxb-impl")
        select("xpp3:xpp3", "xpp3:xpp3")
    }
}