NB! It seems this console command is not compatible with CS2.
Command Profile

HOST_WORKSHOP_COLLECTION

CS:GO

This command will get the latest version of the specified workshop collection ID and set the maps in that collection as the server's map list.

Syntax
host_workshop_collection [Workshop ID]

Description

This command will get the latest version of the specified workshop collection ID and set the maps in that collection as the server's map list.

Syntax And Arguments

host_workshop_collection [Workshop ID]
Workshop ID The ID of the workshop collection you wish to set as the server's map list (the number part of a workshop page URL).