improve intellisense c++ properties

.vscode/c_cpp_properties.json

@@ -0,0 +1,24 @@
+{
+    "configurations": [
+        {
+            "name": "Arduino",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "/usr/share/arduino/hardware/arduino/avr/**",
+                "/usr/share/avr/avr/**",
+                "/usr/share/avr/lib/**",
+                "/usr/share/avr/lib/gcc/avr/8.3.0/include/**"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/gcc",
+            "cStandard": "c11",
+            "cppStandard": "gnu++14",
+            "intelliSenseMode": "clang-x64",
+            "browse": {
+                "limitSymbolsToIncludedHeaders": true,
+                "databaseFilename": ""
+            }
+        }
+    ],
+    "version": 4
+}