Specify particular platform for c_cpp configuration

platformio/ide/tpls/vscode/.vscode/c_cpp_properties.json.tpl

@@ -1,6 +1,15 @@
 {
     "configurations": [
         {
+% import platform
+% systype = platform.system().lower()
+% if systype == "windows":
+            "name": "Win32",
+% elif systype == "darwin":
+            "name": "Mac",
+% else:
+            "name": "Linux",
+% end
             "includePath": [
 % for include in includes:
                 "{{include.replace('"', '\\"').replace('\\\\', '/').replace('\\', '/')}}",