Add VS 2025 CI jobs

Author: ChrisThrasher

.github/workflows/windows-simple-builds.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-2019, windows-2022]
+        os: [windows-2019, windows-2022, windows-2025]
         platform: [Win32, x64]
         build_type: [Debug, Release]
         std: [14, 17]