* Add multiple config entry support for Nest
* Set a config entry unique id based on nest project id
* Add missing translations and remove untested committed
* Remove unnecessary translation
* Remove dead code
* Remove old handling to avoid duplicate error logs
Fix legacy nest diangostics to return gracefully, rather than a TypError
by checking explicitiy for SDM in the config entry. Update diagnostics
to use the common nest test fixture, and extend with support for the
legacy nest config. Use the sdm test fixture in the existing legacy
tests so they all share the same config files.
