Function from_float

FluidNC/src/string_util.cpp:100–111

    }

    bool from_float(std::string_view sv, float& value) {
        // std::from_chars() does not work for float arguments on ESP32
        std::string s(sv);
        char*       floatEnd;
        const char* str = s.c_str();
        value           = strtof(str, &floatEnd);
        if (floatEnd != (str + sv.length())) {
            return false;
        }

        return true;
    }

    bool split(std::string_view& input, std::string_view& next, char delim) {
        auto pos = input.find_first_of(delim);