[BUG] commands are slow for accounts with many licenses (16k)

[rossengeorgiev]

Description
steamctl doesn't cache licenses, package info, and product info, so accounts thousands of licenses experience very slow runtime.

Steps to Reproduce the behavior

1. Account with several thousand licenses
2. Run any depot command

What happened
depot command takes a long time. Log show many PICS requests

Expected behavior
depot commands are quick

Versions Report

steamctl --versions-report

(Run steamctl --versions-report and paste the output below)

N/A