First init.

libraries/mcu-renderer/tools/fontconv/utils.h

@@ -0,0 +1,23 @@
+/*
+ * MCU renderer fontconv
+ * Utilities
+ *
+ * (C) 2023 Gissio
+ *
+ * License: MIT
+ */
+
+#if !defined(UTILS_H)
+#define UTILS_H
+
+#include <set>
+#include <string>
+
+#include "Font.h"
+
+std::string to_lower(std::string str);
+std::string to_upper(std::string str);
+std::vector<std::string> split(std::string &str, char c);
+std::set<Charcode> parseCharcodes(std::string &charcodes);
+
+#endif