config: do not open browser on headless if google fs

On google fs (drive, google photos, and google cloud storage), if
headless is selected, do not open browser.

This also supplies a new option "auth-no-open-browser" for authorize
if the user does not want it.

This should fix #3323.
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Gitea Version: 1.28.0+dev-477-g8b6ad49a5f