[compat] HaikuOS port (#2805)

Still had the issues with libusb, but that should get solved with the other PRs anyways
Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2805
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

src/core/frontend/emu_window.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2014 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -13,7 +16,7 @@ namespace Core::Frontend {
 
 class GraphicsContext;
 
-/// Information for the Graphics Backends signifying what type of screen pointer is in
+/// @brief Information for the Graphics Backends signifying what type of screen pointer is in
 /// WindowInformation
 enum class WindowSystemType {
     Headless,
@@ -22,6 +25,7 @@ enum class WindowSystemType {
     Wayland,
     Cocoa,
     Android,
+    Xcb,
 };
 
 /**