[MOB-10037] Add missing iOS permission in example app (#270)

* Add iOS microphone permission in example app

* Add iOS photo library permission in example app

* Update iOS usage descriptions to match the docs

Author: a7medev

example/ios/Runner/Info.plist

@@ -41,5 +41,9 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
+	<key>NSMicrophoneUsageDescription</key>
+	<string>Instabug needs access to your microphone so you can attach voice notes.</string>
+	<key>NSPhotoLibraryUsageDescription</key>
+	<string>Instabug needs access to your photo library so you can attach images.</string>
 </dict>
 </plist>