Command to list all user powertools

[jstnf]

Feature description

Add a command to query and list all of a player's powertools.

How the feature is useful

There is currently a way to view the powertool commands on a single item with /powertool l:, but I noticed there is no way to query all of a user's powertools.

Adding a command to do so can be useful to users who actively use powertools, so they are not blindsided by a rarely used or forgotten powertool.

This information is readily available in UserData, so a command to query all entries is trivial to implement.