Change sorting in timezones.csv #1423

Currently the sorting is done by name. This causes the offset to get jumbled up. The confusion mainly arises while searching for America/Europe.
What if the region/country is sorted alphabetically, followed by sorting by offset? This probably would make searching for the right time zone easier.
I couldn't think of a better way.
https://github.com/iptv-org/database/blob/15dedbc82c600faea6c6d569edab414867ab6b2f/data/timezones.csv