Make multiplatform compile shared app resources

Multiplatform/Shared/ErrorHandler.swift

@@ -0,0 +1,31 @@
+//
+//  ErrorHandler.swift
+//  NetNewsWire
+//
+//  Created by Maurice Parker on 6/28/20.
+//  Copyright © 2020 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+import RSCore
+import os.log
+
+struct ErrorHandler {
+
+	private static var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "Application")
+
+//	public static func present(_ viewController: UIViewController) -> (Error) -> () {
+//		return { [weak viewController] error in
+//			if UIApplication.shared.applicationState == .active {
+//				viewController?.presentError(error)
+//			} else {
+//				ErrorHandler.log(error)
+//			}
+//		}
+//	}
+		
+	public static func log(_ error: Error) {
+		os_log(.error, log: self.log, "%@", error.localizedDescription)
+	}
+
+}