TF-2384 Handle NSE to get plain notification in iOS

Signed-off-by: dab246 <tdvu@linagora.com>
(cherry picked from commit 364f32a14b9888f73a3a103b8b5e1bc9b31e148e)

ios/TwakeMailNSE/Utils/InfoPlistReader.swift

@@ -0,0 +1,45 @@
+import Foundation
+
+struct InfoPlistReader {
+    private enum Keys {
+        static let baseBundleIdentifier = "baseBundleIdentifier"
+        static let keychainAccessGroupIdentifier = "keychainAccessGroupIdentifier"
+        static let bundleDisplayName = "CFBundleDisplayName"
+    }
+    
+    /// Info.plist reader on the bundle object that contains the current executable.
+    static let main = InfoPlistReader(bundle: .main)
+    
+    /// Info.plist reader on the bundle object that contains the main app executable.
+    static let app = InfoPlistReader(bundle: .app)
+
+    private let bundle: Bundle
+
+    /// Initializer
+    /// - Parameter bundle: bundle to read values from
+    init(bundle: Bundle) {
+        self.bundle = bundle
+    }
+
+    /// Base bundle identifier set in Info.plist of the target
+    var baseBundleIdentifier: String {
+        infoPlistValue(forKey: Keys.baseBundleIdentifier)
+    }
+
+    /// Keychain access group identifier set in Info.plist of the target
+    var keychainAccessGroupIdentifier: String {
+        infoPlistValue(forKey: Keys.keychainAccessGroupIdentifier)
+    }
+    
+    /// Bundle display name of the target
+    var bundleDisplayName: String {
+        infoPlistValue(forKey: Keys.bundleDisplayName)
+    }
+
+    private func infoPlistValue<T>(forKey key: String) -> T {
+        guard let result = bundle.object(forInfoDictionaryKey: key) as? T else {
+            fatalError("Add \(key) into your target's Info.plst")
+        }
+        return result
+    }
+}