add vs_version 18 to setup.py

Author: sbSteveK

setup.py

@@ -174,7 +174,10 @@ def determine_generator_args(cmake_version=None, windows_sdk_version=None):
             # This technique may not work with customized VS install paths.
             # An alternative would be to utilize private python calls:
             # (distutils._msvccompiler._find_vc2017() and _find_vc2015()).
-            if '\\Microsoft Visual Studio\\2022' in compiler.cc:
+            if '\\Microsoft Visual Studio\\2026' in compiler.cc:
+                vs_version = 18
+                vs_year = 2026
+            elif '\\Microsoft Visual Studio\\2022' in compiler.cc:
                 vs_version = 17
                 vs_year = 2022
             elif '\\Microsoft Visual Studio\\2019' in compiler.cc: