Add a platform neutral version of localtime/gmtime

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-05-25.16:47:53.077>
labels = ['type-feature', 'library', '3.11']
title = 'Add a platform neutral version of localtime/gmtime'
updated_at = <Date 2022-01-24.00:01:54.027>
user = 'https://github.com/jamercee'

bugs.python.org fields:

activity = <Date 2022-01-24.00:01:54.027>
actor = 'iritkatriel'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-05-25.16:47:53.077>
creator = 'jamercee'
dependencies = []
files = []
hgrepos = []
issue_num = 40771
keywords = []
message_count = 4.0
messages = ['369895', '369903', '370011', '370023']
nosy_count = 4.0
nosy_names = ['belopolsky', 'SilentGhost', 'jamercee', 'p-ganssle']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue40771'
versions = ['Python 3.11']