added CMake into gitignore

Author: andreagilardoni

.gitignore

@@ -6,3 +6,22 @@
 .vs
 build
 .idea/
+
+### 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/