Update google calendar integration with a config flow (#68010)
* Convert google calendar to config flow and async
* Call correct exchange method
* Fix async method and reduce unnecessary diffs
* Wording improvements
* Reduce unnecessary diffs
* Run load/update config from executor
* Update homeassistant/components/google/calendar.py
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
* Remove unnecessary updating of unexpected multiple config entries.
* Remove unnecessary unique_id checks
* Improve readability with comments about device code expiration
* Update homeassistant/components/google/calendar.py
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
* Update homeassistant/components/google/calendar.py
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
* Update homeassistant/components/google/api.py
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
* Add comment for when code is none on timeout
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
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