Vulkan: HDR support for Wayland

This change enables HDR support for wayland as an experimental feature.
It supports both non-linear extended sRGB and un-clamped sRGB.

Windows isn't supported as the HDR settings are not accessible via an
API and would require similar settings that games use to configure the
monitor. Adding those sliders isn't what we would like to add.

Vulkan (working group) is working on new extensions that might change
the shortcomings. It isn't clear yet what the extension will do and what
the impact is for applications that want to use it. When the extension
is out we should review at the situation again.

Pull Request: https://projects.blender.org/blender/blender/pulls/133159

scripts/startup/bl_ui/space_userpref.py

@@ -2878,6 +2878,13 @@ class USERPREF_PT_experimental_prototypes(ExperimentalPanel, Panel):
                 ({"property": "write_legacy_blend_file_format"}, ("/blender/blender/issues/129309", "#129309")),
             ),
         )
+        import sys
+        if sys.platform == "linux":
+            self._draw_items(
+                context, (
+                    ({"property": "use_vulkan_hdr"}, ("/blender/blender/issues/140277", "#140277")),
+                ),
+            )
 
 
 # Keep this as tweaks can be useful to restore.