Add CG types support

Author: Kyle-Ye

Sources/OpenCoreGraphics/CGContext.swift

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+//
+//  CGContext.swift
+//  OpenCoreGraphics
+//
+//  Created by Kyle on 1/11/26.
+//  Status: Empty
+
+open class CGContext {}

Sources/OpenQuartzCore/CAAction.swift

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+//
+//  CAAction.swift
+//  OpenCoreGraphics
+//
+//  Created by Kyle on 1/11/26.
+//  Status: Empty
+
+public protocol CAAction: AnyObject {}
+
+open class CABasicAnimation: CAAction {
+
+}

Sources/OpenQuartzCore/CALayer.swift

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+//
+//  CALayer.swift
+//  OpenCoreGraphics
+//
+//  Created by Kyle on 1/11/26.
+//  Status: Empty
+
+open class CALayer {
+    open weak var delegate: CALayerDelegate?
+
+    open var contents: CGImage?
+
+    open var contentsScale: CGFloat = 1.0
+}
+
+extension CALayer: Hashable {
+    public func hash(into hasher: inout Hasher) {
+        hasher.combine(ObjectIdentifier(self))
+    }
+
+    public static func == (lhs: CALayer, rhs: CALayer) -> Bool {
+        return lhs === rhs
+    }
+}
+
+public protocol CALayerDelegate: AnyObject {
+    func action(forKey event: String) -> CABasicAnimation?
+}

Sources/OpenQuartzCore/CGImage.swift

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+//
+//  CGImage.swift
+//  OpenCoreGraphics
+//
+//  Created by Kyle on 1/11/26.
+
+open class CGImage {}