bug: wildfly_attribute does not support list attributes

[gclawes]

The wildfly_attribute resource does not support modifying attributes of type [LIST].

Attributes like /subsystem=undertow/server=default-server/http-listener disallowed-methods are type [LIST]: https://docs.wildfly.org/20/wildscribe/subsystem/undertow/server/http-listener/index.html

write-attribute fails when setting a space-separated list of attributes "HEAD TRACE TRACK":

[2023-05-03T15:37:00-04:00] INFO: Running JB-CLI(9992): /subsystem=undertow/server=default-server/https-listener=https:write-attribute(name=disallowed-methods,value=HEAD\ TRACE\ TRACK)
[2023-05-03T15:37:01-04:00] DEBUG: {
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0097: Wrong type for 'disallowed-methods'. Expected [LIST] but was STRING",
    "rolled-back" => true
}

According to the docs (https://docs.wildfly.org/20/wildscribe/index.html) there is a separate set of list-* methods, specifically list-add, list-clear, list-get, list-remove to add/modify/clear list attributes. There is also a set for map attributes.

wildfly_attribute needs to be able to set attributes using these special list/map attributes.