Added initial POC version of NetNewsWire for iOS to use as a starting point for the actual app.

iOS/Add Feed/AddFeedFolderPickerData.swift

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+//Copyright © 2019 Vincode, Inc. All rights reserved.
+
+import Foundation
+import Account
+import RSCore
+import RSTree
+
+struct AddFeedFolderPickerData {
+	
+	var containerNames = [String]()
+	var containers = [Container]()
+	
+	init() {
+
+		let treeControllerDelegate = FolderTreeControllerDelegate()
+		
+		let rootNode = Node(representedObject: AccountManager.shared.localAccount, parent: nil)
+		rootNode.canHaveChildNodes = true
+		let treeController = TreeController(delegate: treeControllerDelegate, rootNode: rootNode)
+
+		guard let rootNameProvider = treeController.rootNode.representedObject as? DisplayNameProvider else {
+			return
+		}
+		
+		let rootName = rootNameProvider.nameForDisplay
+		containerNames.append(rootName)
+		containers.append(treeController.rootNode.representedObject as! Container)
+		
+		treeController.rootNode.childNodes.forEach { node in
+			guard let childContainer = node.representedObject as? Container else {
+				return
+			}
+			let childName = (childContainer as! DisplayNameProvider).nameForDisplay
+			containerNames.append("\(rootName) / \(childName)")
+			containers.append(childContainer)
+		}
+		
+	}
+
+}