Method IsDirectory

ImGuiFileDialog.cpp:818–825

        return res;
    }
    bool IsDirectory(const std::string& vFilePathName) override {
        DIR* pDir = opendir(vFilePathName.c_str());
        if (pDir) {
            (void)closedir(pDir);
            return true;
        }
        return false;
    }
    void GetFileDateAndSize(const std::string& vFilePathName, const IGFD::FileType& vFileType, std::string& voDate, size_t& voSize) override {
        struct stat statInfos{};
        int32_t result{};