[client,gui] Update url_windows.go to offer arm64 executable download (#4586)

Author: webash

version/url_windows.go

@@ -1,19 +1,28 @@
 package version
 
-import "golang.org/x/sys/windows/registry"
+import (
+	"golang.org/x/sys/windows/registry"
+	"runtime"
+)
 
 const (
 	urlWinExe = "https://pkgs.netbird.io/windows/x64"
+	urlWinExeArm = "https://pkgs.netbird.io/windows/arm64"
 )
 
 var regKeyAppPath = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App Paths\\Netbird"
 
 // DownloadUrl return with the proper download link
 func DownloadUrl() string {
 	_, err := registry.OpenKey(registry.LOCAL_MACHINE, regKeyAppPath, registry.QUERY_VALUE)
-	if err == nil {
-		return urlWinExe
-	} else {
+	if err != nil {
 		return downloadURL
 	}
+	
+	url := urlWinExe
+	if runtime.GOARCH == "arm64" {
+		url = urlWinExeArm
+	}
+	
+	return url
 }