List party from other players

[Dominik48N]

Include a function to query players via the /party list command for party information from a party where the player himself is not inside.
Means, PlayerA can type /party list PlayerB and if PlayerB is in a party, PlayerA will get the same information as if PlayerB type /party list.

In order to read out the party information of other players, an extra permission should be required so that server administrators can optionally only make this function available to their moderators.

The advantage of the function could be that when the server moderators edit reports, they can see directly who a reported player is in a party with, e.g. to better identify teaming bans.