to_lower w/o boost

Base/Util/StringUtil.cpp

@@ -15,6 +15,7 @@
 #include "Base/Util/StringUtil.h"
 #include "Base/Util/Assert.h"
 #include <boost/algorithm/string.hpp>
+#include <cctype>
 #include <cerrno>
 #include <charconv>
 
@@ -49,7 +50,7 @@ std::string Base::String::join(const std::vector<std::string>& joinable, const s
 
 std::string Base::String::to_lower(std::string text)
 {
-    boost::to_lower(text);
+    std::ranges::transform(text, text.begin(), [](unsigned char c) { return std::tolower(c); });
     return text;
 }