test: Add MSVC-compiled Windows test binaries (x86 + x86_64)

Built with Visual Studio 2022 (MSVC v143) in Release mode:
- data/multi_region/bin/ (3 protected functions)
- data/inline_heavy/bin/ (force-inlined protected function)
- data/nested_protect/bin/ (nested protected function calls)

Update .gitignore to allow exe/dll in all data/*/bin/ directories.

Author: scc

.gitignore

@@ -27,7 +27,8 @@
 *.app
 
 # Allow test binaries in data/
-!data/basic/bin/*.exe
+!data/*/bin/*.exe
+!data/*/bin/*.dll
 
 build/
 .vscode/