Improve C++.gitignore

C++.gitignore

@@ -21,6 +21,8 @@
 *.so
 *.dylib
 *.dll
+*.so.*
+
 
 # Fortran module files
 *.mod
@@ -37,5 +39,31 @@
 *.out
 *.app
 
+# Build directories
+build/
+Build/
+build-*/
+
+# CMake generated files
+CMakeFiles/
+CMakeCache.txt
+cmake_install.cmake
+Makefile
+install_manifest.txt 
+compile_commands.json
+
+# Temporary files
+*.tmp 
+*.log 
+*.bak 
+*.swp 
+
+# vcpkg
+vcpkg_installed/
+
 # debug information files
 *.dwo
+
+# test output & cache
+Testing/
+.cache/