Refactor InstantPageUI and related modules

submodules/InstantPageUI/Sources/InstantPageAnchorItem.swift

@@ -0,0 +1,48 @@
+import Foundation
+import UIKit
+import Postbox
+import TelegramCore
+import AsyncDisplayKit
+import TelegramPresentationData
+import AccountContext
+
+final class InstantPageAnchorItem: InstantPageItem {
+    let wantsNode: Bool = false
+    let separatesTiles: Bool = false
+    let medias: [InstantPageMedia] = []
+
+    let anchor: String
+    var frame: CGRect
+    
+    init(frame: CGRect, anchor: String) {
+        self.frame = frame
+        self.anchor = anchor
+    }
+    
+    func matchesAnchor(_ anchor: String) -> Bool {
+        return anchor == self.anchor
+    }
+    
+    func drawInTile(context: CGContext) {
+    }
+    
+    func node(context: AccountContext, strings: PresentationStrings, theme: InstantPageTheme, openMedia: @escaping (InstantPageMedia) -> Void, longPressMedia: @escaping (InstantPageMedia) -> Void, openPeer: @escaping (PeerId) -> Void, openUrl: @escaping (InstantPageUrlItem) -> Void, updateWebEmbedHeight: @escaping (CGFloat) -> Void, updateDetailsExpanded: @escaping (Bool) -> Void, currentExpandedDetails: [Int : Bool]?) -> (InstantPageNode & ASDisplayNode)? {
+        return nil
+    }
+    
+    func matchesNode(_ node: InstantPageNode) -> Bool {
+        return false
+    }
+    
+    func linkSelectionRects(at point: CGPoint) -> [CGRect] {
+        return []
+    }
+    
+    func distanceThresholdGroup() -> Int? {
+        return nil
+    }
+    
+    func distanceThresholdWithGroupCount(_ count: Int) -> CGFloat {
+        return 0.0
+    }
+}