setup luacats

tools/luarc_sample.json

@@ -0,0 +1,19 @@
+{
+    "$schema": "https://raw.githubusercontent.com/sumneko/vscode-lua/master/setting/schema.json",
+    "diagnostics.globals": ["import"],
+    "diagnostics.severity": {
+        "duplicate-set-field": "Hint"
+    },
+    "format.defaultConfig": {
+        "indent_style": "space",
+        "indent_size": "4"
+    },
+    "runtime.builtin": {
+        "io": "disable",
+        "os": "disable",
+        "package": "disable"
+    },
+    "runtime.nonstandardSymbol": ["+=", "-=", "*=", "/=", "//=", "%=", "<<=", ">>=", "&=", "|=", "^="],
+    "runtime.version": "Lua 5.4",
+    "workspace.library": []
+}