Add AnyModel

[leogdion]

No description provided.

[leogdion]

#if canImport(SwiftData)
  import BushelMachineData
  import Foundation
  public import SwiftData

  /// Phantom Type for easily retrieving fetching `PersistentModel` objects from a `ModelContext`.
  public struct AnyModel: Sendable, Identifiable {
    /// An error that is thrown when a `PersistentModel`
    /// with the specified `PersistentIdentifier` is not found.
    public struct NotFoundError: Error {
      /// The `PersistentIdentifier` of the `PersistentModel` that was not found.
      public let persistentIdentifier: PersistentIdentifier
    }

    /// The unique identifier of the model.
    public var id: PersistentIdentifier.ID { persistentIdentifier.id }

    /// The `PersistentIdentifier` of the model.
    public let persistentIdentifier: PersistentIdentifier

    /// Initializes a new `Model` instance with the specified `PersistentIdentifier`.
    ///
    /// - Parameter persistentIdentifier: The `PersistentIdentifier` of the model.
    public init(persistentIdentifier: PersistentIdentifier) {
      self.persistentIdentifier = persistentIdentifier
    }
  }

  extension AnyModel {
//    /// A boolean value indicating whether the model is temporary or not.
//    public var isTemporary: Bool {
//      self.persistentIdentifier.isTemporary ?? false
//    }

    /// Initializes a new `Model` instance with the specified `PersistentModel`.
    ///
    /// - Parameter model: The `PersistentModel` to initialize the `Model` with.
    public init(_ model: any PersistentModel) {
      self.init(persistentIdentifier: model.persistentModelID)
    }

    public init(typeErase: Model<some PersistentModel>) {
      self.init(persistentIdentifier: typeErase.persistentIdentifier)
    }
  }

  extension Model {
    public init(anyModel: AnyModel, type _: T.Type) {
      self.init(persistentIdentifier: anyModel.persistentIdentifier)
    }
  }
#endif