Upgrade peek controller to modern context menu implementation

submodules/ContextUI/Sources/PeekControllerContent.swift

@@ -0,0 +1,29 @@
+import Foundation
+import UIKit
+import AsyncDisplayKit
+import Display
+
+public enum PeekControllerContentPresentation {
+    case contained
+    case freeform
+}
+
+public enum PeerControllerMenuActivation {
+    case drag
+    case press
+}
+
+public protocol PeekControllerContent {
+    func presentation() -> PeekControllerContentPresentation
+    func menuActivation() -> PeerControllerMenuActivation
+    func menuItems() -> [ContextMenuItem]
+    func node() -> PeekControllerContentNode & ASDisplayNode
+    
+    func topAccessoryNode() -> ASDisplayNode?
+    
+    func isEqual(to: PeekControllerContent) -> Bool
+}
+
+public protocol PeekControllerContentNode {
+    func updateLayout(size: CGSize, transition: ContainedViewLayoutTransition) -> CGSize
+}