Timezone to POSIX String converter

The total lack of helpers to build this string for configTzTime is the motivation of this tool.
Data source: data.iana.org
Poke me if anything seems broken.
Last updated: 2023-03-22 00:48:09 

  const char* NTP_SERVER = "europe.pool.ntp.org";
  const char* TZ_INFO = "CET-1CEST,M3.3.0,M10.5.0/3";
  const char* TZ_NAME = "Europe/Paris";
  const char* TZ_DESC = "";

  configTzTime(TZ_INFO, NTP_SERVER);