* Pre-factor nest subscriber to library
Move the nest subscriber to a library that can be reused in a future PR:
- From ConfigFlow for creating subscriptions
- On nest removal to delete subscriptions
This is pulled out of PR #59260 to make that easier to review.
* Resolve pylint error in nest api subscriber
* Remove duplicate constants
* Add support for Installed Auth authentication flows.
Add support for additional credential types to make configuration simpler for
end users. The existing Web App auth flow requires users to configure
redirect urls with Google that has a very high security bar: requires ssl,
and a publicly resolvable dns name.
The new Installed App flow requires the user to copy/paste an access code
and is the same flow used by the `google` calendar integration. This also
allows us to let users create one authentication credential to use with
multiple google integrations.
* Remove hard migration for nest config entries, using soft migration
* Add comment explaining soft migration
* Revet changes to common.py made obsolete by removing migration
* Reduce unnecessary diffs in nest common.py
* Update config entries using library method
* Run `python3 -m script.translations develop`
* Revert nest auth domain
* Remove compat function which is no longer needed
* Remove stale nest comment
* Adjust typing for python3.8
* Address PR feedback for nest auth revamp