fix gif caching

Pocket Poster/Packages/GIFImage/Sources/extension/CFString+GIFImage.swift

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+//
+//  File.swift
+//  
+//
+//  Created by Igor Ferreira on 05/04/2022.
+//
+
+import Foundation
+import ImageIO
+
+extension CFString {
+    var asKey: UnsafeMutableRawPointer {
+        return Unmanaged.passUnretained(self).toOpaque()
+    }
+}

Pocket Poster/Packages/GIFImage/Sources/extension/CGImageSource+GIFImage.swift

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+//
+//  File.swift
+//  
+//
+//  Created by Igor Ferreira on 05/04/2022.
+//
+
+import Foundation
+import ImageIO
+
+extension CGImageSource {
+    func intervalAtIndex(_ index: Int) -> TimeInterval? {
+        guard let properties = CGImageSourceCopyPropertiesAtIndex(self, index, nil) else {
+            return nil
+        }
+
+        guard let gifProperties = CFDictionaryGetValue(properties, kCGImagePropertyGIFDictionary.asKey) else {
+            return nil
+        }
+
+        let dictionary = unsafeBitCast(gifProperties, to: CFDictionary.self)
+
+        let pointer: UnsafeRawPointer
+        if let delay = CFDictionaryGetValue(dictionary, kCGImagePropertyGIFDelayTime.asKey) {
+            pointer = delay
+        } else if let unclampedDelay = CFDictionaryGetValue(dictionary, kCGImagePropertyGIFUnclampedDelayTime.asKey) {
+            pointer = unclampedDelay
+        } else {
+            return nil
+        }
+
+        let interval = unsafeBitCast(pointer, to: AnyObject.self).doubleValue ?? 0.0
+        if interval > 0.0 {
+            return interval
+        } else {
+            return nil
+        }
+    }
+}

Pocket Poster/Packages/GIFImage/Sources/extension/Data+GIFImage.swift

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+//
+//  File.swift
+//  
+//
+//  Created by Igor Ferreira on 05/04/2022.
+//
+
+import Foundation
+import ImageIO
+
+extension Data {
+    func imageAsyncSequence() throws -> CGImageSourceFrameSequence {
+        return try CGImageSourceFrameSequence(data: self)
+    }
+}

Pocket Poster/Packages/GIFImage/Sources/extension/Environment+GIFImage.swift

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+//
+//  File.swift
+//  
+//
+//  Created by Igor Ferreira on 05/04/2022.
+//
+
+import SwiftUI
+
+struct GIFImageEnvironment: EnvironmentKey {
+    static var defaultValue: ImageLoader = {
+        return ImageLoader()
+    }()
+}
+
+extension EnvironmentValues {
+    var imageLoader: ImageLoader {
+        get { self[GIFImageEnvironment.self] }
+        set { self[GIFImageEnvironment.self] = newValue }
+    }
+}
+
+extension View {
+    @ViewBuilder
+    func with(imageLoader: ImageLoader) -> some View {
+        environment(\.imageLoader, imageLoader)
+    }
+}