[v3 windows] Support devtools on startup

v3/pkg/application/webview_window_windows_devtools.go

@@ -0,0 +1,13 @@
+//go:build windows && !production
+
+package application
+
+import (
+	"github.com/wailsapp/go-webview2/pkg/edge"
+)
+
+func init() {
+	showDevTools = func(chromium *edge.Chromium) {
+		chromium.OpenDevToolsWindow()
+	}
+}