Fix sort addon list output issue #17

[LowLevelLover]

Fix #17 issue with create a vector of addon_status keys, then sort it.

[Trojan295]

Thanks @FarzinVatani for the contribution! Code works fine, although I'm curious, if this can be done simpler.

I think it could be done by just changing from a HashMap to a BTreeMap:

let mut addon_status: BTreeMap<String, Vec<String>> = BTreeMap::new();

This should ensure, that we will have an order, when iterating over the map.

[LowLevelLover]

@Trojan295 Thanks for your hint, I changed the type of addon_status and now it works well.

[Trojan295]

Awesome, thank you, @FarzinVatani ! :)