[windows] Support webview2 runtime installation strategies

v2/internal/ffenestri/windows/wv2runtime/browser.go

@@ -0,0 +1,23 @@
+// +build wv2runtime.browser
+
+package wv2runtime
+
+import (
+	"fmt"
+	"github.com/leaanthony/webview2runtime"
+)
+
+func doInstallationStrategy(installStatus installationStatus) error {
+	confirmed, err := webview2runtime.Confirm("This application requires the WebView2 runtime. Press OK to open the download page. Minimum version required: "+minimumRuntimeVersion, "Missing Requirements")
+	if err != nil {
+		return err
+	}
+	if confirmed {
+		err = webview2runtime.OpenInstallerDownloadWebpage()
+		if err != nil {
+			return err
+		}
+	}
+
+	return fmt.Errorf("webview2 runtime not installed")
+}