Polish codes related to password generation

1. Polish codes in PasswordGeneratorFlavour
2. Polish related codes in view controllers

passKit/Helpers/PasswordGeneratorFlavor.swift

@@ -0,0 +1,52 @@
+//
+//  PasswordGeneratorFlavour.swift
+//  passKit
+//
+//  Created by Danny Moesch on 28.11.18.
+//  Copyright © 2018 Bob Sun. All rights reserved.
+//
+
+import KeychainAccess
+
+public enum PasswordGeneratorFlavor: String {
+    case apple = "Apple"
+    case random = "Random"
+
+    public var localized: String {
+        return rawValue.localize()
+    }
+    
+    public var longNameLocalized: String {
+        switch self {
+        case .apple:
+            return "ApplesKeychainStyle".localize()
+        case .random:
+            return "RandomString".localize()
+        }
+    }
+
+    public var defaultLength: (min: Int, max: Int, def: Int) {
+        switch self {
+        case .apple:
+            return (15, 15, 15)
+        case .random:
+            return (4, 64, 16)
+        }
+    }
+
+    public func generate(length: Int) -> String {
+        switch self {
+        case .apple:
+            return Keychain.generatePassword()
+        case .random:
+            return PasswordGeneratorFlavor.generateRandom(length: length)
+        }
+    }
+
+    private static func generateRandom(length: Int) -> String {
+        let chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*_+-="
+        return String((0..<length).map { _ in chars.randomElement()! })
+    }
+}
+
+extension PasswordGeneratorFlavor: CaseIterable {}