vscode autoformatting

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "ms-vscode.cpptools"
+    ]
+}

.vscode/settings.json

@@ -1,5 +1,8 @@
 {
     "files.associations": {
         "iostream": "cpp"
-    }
+    },
+    "C_Cpp.clang_format_fallbackStyle": "LLVM",
+    "editor.formatOnSave": true,
+    "editor.formatOnPaste": true,
 }