gpu: add Surface.DescriptorFromWindowsHWND

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

gpu/TODO-webgpu.h

@@ -1,9 +1,3 @@
-pub const WGPUSurfaceDescriptorFromWindowsHWND = extern struct {
-    chain: ChainedStruct,
-    hinstance: *anyopaque,
-    hwnd: *anyopaque,
-};
-
 pub const WGPUSurfaceDescriptorFromWindowsSwapChainPanel = extern struct {
     chain: ChainedStruct,
     swap_chain_panel: *anyopaque,

gpu/src/surface.zig

@@ -36,4 +36,10 @@ pub const Surface = enum(usize) {
         chain: ChainedStruct,
         core_window: *anyopaque,
     };
+
+    pub const DescriptorFromWindowsHWND = extern struct {
+        chain: ChainedStruct,
+        hinstance: *anyopaque,
+        hwnd: *anyopaque,
+    };
 };