LibGUI/WindowServer: Implement per-window custom cursors

userspace/libraries/LibGUI/include/LibGUI/Packet.h

@@ -211,6 +211,7 @@ namespace LibGUI
 		WindowSetMaxSize,
 		WindowSetFullscreen,
 		WindowSetTitle,
+		WindowSetCursor,
 
 		DestroyWindowEvent,
 		CloseWindowEvent,
@@ -297,6 +298,13 @@ namespace LibGUI
 			BAN::String, title
 		);
 
+		DEFINE_PACKET(
+			WindowSetCursor,
+			uint32_t, width,
+			uint32_t, height,
+			BAN::Vector<uint32_t>, pixels
+		);
+
 	}
 
 	namespace EventPacket

userspace/libraries/LibGUI/include/LibGUI/Window.h

@@ -50,6 +50,7 @@ namespace LibGUI
 		void set_position(int32_t x, int32_t y);
 
 		void set_cursor_visible(bool visible);
+		void set_cursor(uint32_t width, uint32_t height, BAN::Span<uint32_t> pixels);
 
 		Attributes get_attributes() const { return m_attributes; }
 		void set_attributes(Attributes attributes);