Update vscode settings.

.vscode/c_cpp_properties.json

@@ -10,7 +10,8 @@
             "cStandard": "c11",
             "cppStandard": "c++14",
             "intelliSenseMode": "linux-clang-x64",
-            "compileCommands": "${workspaceFolder}/build/compile_commands.json"
+            "compileCommands": "${workspaceFolder}/build/compile_commands.json",
+            "configurationProvider": "ms-vscode.cmake-tools"
         }
     ],
     "version": 4