add lua funcs names to Spell words && use tabs instead spaces

.vscode/settings.json

@@ -1,5 +1,34 @@
 {
+    "editor.tabSize": 4,
+    "editor.insertSpaces": false,
     "files.associations": {
         "stdlib.h": "c"
-    }
+    },
+    "cSpell.words": [
+        "ksys",
+        "ksys_oskey_t",
+        "LUALIB_API",
+        "luaL_newlib",
+        "metatable",
+        "luaL_newmetatable",
+        "luaL_setmetatable",
+        "lua_createtable",
+        "luaL_setfuncs",
+        "luaL_checkinteger",
+        "luaL_checkstring",
+        "luaL_checkudata",
+        "lua_pushboolean",
+        "lua_pushinteger",
+        "lua_pushnumber",
+        "luaL_optinteger",
+        "lua_pushstring",
+        "lua_pushnil",
+        "lua_touserdata",
+        "lua_setfield",
+        "lua_getfield",
+        "lua_settop",
+        "lua_islightuserdata",
+        "luaL_checktype",
+        "LUA_TTABLE",
+    ]
 }