Add dependency on google-photos-library-api: Change the Google Photos client...

Add dependency on google-photos-library-api: Change the Google Photos client library to a new external package (#125040)

* Change the Google Photos client library to a new external package

* Remove mime type guessing

* Update tests to mock out the client library and iterators

* Update homeassistant/components/google_photos/media_source.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

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Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>