add tutorial-guide-for-safenet-authentication-client-for-code-signing

doc

build.py

@@ -271,7 +271,7 @@ def get_features(args):
     features = ['inline'] if not args.flutter else []
     if args.hwcodec:
         features.append('hwcodec')
-    if args.gpucodec: 
+    if args.gpucodec:
         features.append('gpucodec')
     if args.flutter:
         features.append('flutter')
@@ -494,6 +494,7 @@ def main():
         system2('mv target/release/rustdesk.exe target/release/RustDesk.exe')
         pa = os.environ.get('P')
         if pa:
+            # https://certera.com/kb/tutorial-guide-for-safenet-authentication-client-for-code-signing/
             system2(
                 f'signtool sign /a /v /p {pa} /debug /f .\\cert.pfx /t http://timestamp.digicert.com  '
                 'target\\release\\rustdesk.exe')