Added clang-tidy config and cleaned up the code a little.

source/mijin/util/os.cpp

@@ -51,13 +51,13 @@ Result<LibraryHandle> openSharedLibrary(std::string_view libraryFile) noexcept
 {
 #if MIJIN_TARGET_OS == MIJIN_OS_LINUX
     const std::unique_lock dlErrorLock(gDlErrorMutex);
-    dlerror();
+    dlerror(); // NOLINT(concurrency-mt-unsafe) we take care of that
 
     const fs::path libraryPath = fs::absolute(libraryFile);
     void* ptr = dlopen(libraryPath.c_str(), RTLD_NOW);
     if (ptr == nullptr)
     {
-        return ResultError(dlerror());
+        return ResultError(dlerror()); // NOLINT(concurrency-mt-unsafe) we take care of that
     }
     return LibraryHandle{.data = dlopen(libraryPath.c_str(), RTLD_NOW)};
 #elif MIJIN_TARGET_OS == MIJIN_OS_WINDOWS