Update VS Code settings for formatting and flash type (#579)

Added formatting settings for C++ and enabled format on save.

Author: CarbonNeuron

.vscode/settings.json

@@ -2,5 +2,9 @@
   "C_Cpp.intelliSenseEngine": "default",
   "idf.pythonInstallPath": "/opt/esp/python_env/idf5.5_py3.12_env/bin/python",
   "idf.port": "/dev/ttyACM0",
-  "idf.flashType": "UART"
+  "idf.flashType": "UART",
+  "C_Cpp.clang_format_style": "file:/workspaces/espp/.clang-format",
+  "C_Cpp.formatting": "clangFormat",
+  "editor.formatOnSave": true,
+  "editor.formatOnSaveMode": "modifications"
 }