Auto merge of #554 - fcfangcc:feat-screenCaptureAccess, r=jdm

Add binding for ScreenCaptureAccess

Add binding for [CGRequestScreenCaptureAccess](https://developer.apple.com/documentation/coregraphics/3656524-cgrequestscreencaptureaccess) and [CGPreflightScreenCaptureAccess](https://developer.apple.com/documentation/coregraphics/3656523-cgpreflightscreencaptureaccess)

 to check if the app has screen recording permission on macOS

core-graphics/src/access.rs

@@ -0,0 +1,26 @@
+pub use base::boolean_t;
+
+#[derive(Default)]
+pub struct ScreenCaptureAccess;
+
+impl ScreenCaptureAccess {
+    /// If current app not in list, will open window.
+    /// Return the same result as preflight.
+    #[inline]
+    pub fn request(&self) -> bool {
+        unsafe { CGRequestScreenCaptureAccess() == 1 }
+    }
+
+    /// Return true if has access
+    #[inline]
+    pub fn preflight(&self) -> bool {
+        unsafe { CGPreflightScreenCaptureAccess() == 1 }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern "C" {
+    // Screen Capture Access
+    fn CGRequestScreenCaptureAccess() -> boolean_t;
+    fn CGPreflightScreenCaptureAccess() -> boolean_t;
+}

core-graphics/src/lib.rs

@@ -41,3 +41,5 @@ pub mod private;
 pub mod image;
 pub mod path;
 pub mod sys;
+#[cfg(target_os = "macos")]
+pub mod access;