Add Visual Studio code settings for auto-formatting of C++ files

.clang_format

@@ -0,0 +1 @@
+{BasedOnStyle: Google, BinPackParameters: false, BinPackArguments: false}

.vscode/settings.json

@@ -93,5 +93,8 @@
     },
     // Support for Flowtype:
     "javascript.validate.enable": false,
-    "flow.useNPMPackagedFlow": true
+    "flow.useNPMPackagedFlow": true,
+
+    // Clang format styling (duplicated in scripts/CMakeClangUtils.txt)
+    "C_Cpp.clang_format_style": "{BasedOnStyle: Google, BinPackParameters: false, BinPackArguments: false}"
 }