Split vulkan_base into smaller units

Closes #30. This is a basic refactoring of the graphics module, so
everything won't be in single file.

utilities/localization.hpp

@@ -0,0 +1,28 @@
+/**
+ * @file localization.hpp
+ * @author Piotr Krygier (everyonencancode@gmail.com)
+ * @brief Simple localization header
+ * @version 0.1
+ * @date 2022-02-15
+ *
+ * @copyright Copyright (c) 2022
+ *
+ */
+
+#pragma once
+#define SELECTED_LANGUAGE rse::utils::locale::EN_US
+
+namespace rse::utils::locale
+{
+
+/**
+ * @brief Available languages
+ *
+ */
+enum Languages_t
+{
+    EN_US = 0,
+    LAST_LANGUAGE
+};
+
+}  // namespace rse::locale