[Improvement]: SwiftData Performance

[azooz2003-bit]

Description

I thought of this RE background thread operations for SwiftData:

1. The whole time we were passing models created on a background context to the main thread, so it can cause crashes because the model is tied to its own context (background) while we use it on main. And changes on background aren't synchronized with main.
2. So after doing the BG operations (syncing with API), we return the ids of the models then perform a load on these ids from main so that these models are tied to main.

Relevant Resources

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• https://www.hackingwithswift.com/quick-start/swiftdata/how-to-transfer-an-object-between-a-background-context-and-the-main-context
• https://fatbobman.com/en/posts/concurret-programming-in-swiftdata/

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