UI: support landscape mode

Ring/Ring/AppDelegate.swift

Ring/Ring/Calls/CallViewController.storyboard

Ring/Ring/Calls/CallViewController.swift

...g/Calls/Conference/ContactPickerViewController.storyboard

Ring/Ring/Contact/ContactViewController.storyboard

Ring/Ring/Coordinators/AppCoordinator.swift

Ring/Ring/Dialpad/DialpadViewController.storyboard

Ring/Ring/Dialpad/DialpadViewController.swift

Ring/Ring/Extensions/UIView+Ring.swift

Ring/Ring/Extensions/UIViewController+Ring.swift

...ations/Conversation/ConversationViewController.storyboard

...nversations/Conversation/ConversationViewController.swift

.../Conversations/SendFile/SendFileViewController.storyboard

...tures/Conversations/SendFile/SendFileViewController.swift

...g/Features/Conversations/SendFile/SendFileViewModel.swift

...onversations/SmartList/SmartlistViewController.storyboard

...res/Conversations/SmartList/SmartlistViewController.swift

...ough/CreateAccount/CreateAccountViewController.storyboard

...lkthrough/CreateAccount/CreateAccountViewController.swift

...ough/CreateProfile/CreateProfileViewController.storyboard