rename 'files' to 'io'

src/logic/scripting/lua/lua_engine.cpp

@@ -3,8 +3,8 @@
 #include <iomanip>
 #include <iostream>
 
-#include "files/files.hpp"
-#include "files/engine_paths.hpp"
+#include "io/io.hpp"
+#include "io/engine_paths.hpp"
 #include "debug/Logger.hpp"
 #include "util/stringutil.hpp"
 #include "libs/api_lua.hpp"
@@ -161,7 +161,7 @@ State* lua::create_state(const EnginePaths& paths, StateType stateType) {
     
     auto resDir = paths.getResourcesFolder();
     auto file = resDir / fs::u8path("scripts/stdmin.lua");
-    auto src = files::read_string(file);
+    auto src = io::read_string(file);
     lua::pop(L, lua::execute(L, 0, src, "core:scripts/stdmin.lua"));
     return L;
 }