Can i import Swift Package to my Playground that is in my workspace? I've already read the answer, but i think it's outdated, because now we can use Swift Packages in iOS projects.
In Xcode 12, you can use Swift Packages with Xcode Playgrounds.
File > New > Workspace...)
File > Add Files to "Workspace Name"... selecting the package directory.
File > New > Playground.... Ensure that you select the Workspace we just created as the "Add to" and "Group" option during Playground creation (in the assistant where you select the Playground's location on disk).
You can find additional details and a sample project in this WWDC20 session: Explore Packages and Projects with Xcode Playgrounds
Ensure to check the new "Build active scheme" checkbox in the inspector for your existing Playgrounds.