Add support for ip firewall address-lists path

[radokristof]

Related to this request/commit: #236

Would be great if we could even add address-lists as well via API

[derdeagle]

@radokristof Would you mind elaborating a bit more on what you need? Managing (so also adding) entries in the ip firewall address-list path is already possible. Am I missing something?

[radokristof]

@derdeagle Sorry you are right. It was just a typo on my end, but from the error I received I assumed it is missing :)

[derdeagle]

Great, no problem!