Add clang-tidy configuration and watch script for improved code quality checks

.vscode/settings.json

@@ -1,9 +1,12 @@
 {
+    "C_Cpp.intelliSenseEngine": "disabled",
     "files.associations": {
         "array": "cpp",
         "*.c": "c"
     },
     "clangd.arguments": [
+        "--background-index",
+        "--clang-tidy",
         "--query-driver=${env:DEVKITPRO}/devkitARM/bin/arm-none-eabi-*",
         "--compile-commands-dir=."
     ]