[BUG] command base is partially synchronous

[SIMULATAN]

Describe the bug
Right now, only the execution of the command itself is async.
However, loading the user settings, which is the longest part as it involves I/O, is happening in the ws thread. This could lead to discord timeouts in the future.

Expected behavior
The whole code in onCommandInteraction should be sent to the thread pool, not only the execution of the command itself.