request for a function to upgrade the achievements with different Steam accounts.

[xiaohuaihai]

Describe the solution you'd like
Maybe a function can realize upgrading achievements using different accounts. For the Playnite can import games with different accounts, the successstory is needed to upgrade achievements differently too.
I think it could be that: always use a main account, few times can change to another account by manual choosing. All of those second accounts can be stored with API and ID like the Playnite.

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