Add .gitignore for C++ and CMake projects

- Generated `.gitignore` using Toptal's template for C++ and CMake.
- Includes rules for object files, libraries, executables,
  CMake-generated files, and build directories.

Author: datalogics-kam

CPlusPlus/.gitignore

@@ -0,0 +1,61 @@
+# Created by https://www.toptal.com/developers/gitignore/api/c++,cmake
+# Edit at https://www.toptal.com/developers/gitignore?templates=c++,cmake
+
+### C++ ###
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+### CMake ###
+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps
+
+### CMake Patch ###
+CMakeUserPresets.json
+
+# External projects
+*-prefix/
+
+# End of https://www.toptal.com/developers/gitignore/api/c++,cmake
+
+build
+
+cmake-*