FEATURE: OAuth authentication with the ability to restrict authenticated users to specified domains for zrok share public. Supports both Google and GitHub authentication in this version. More authentication providers, and extensibility to come in future zrok releases. See the OAuth configuration guide at docs/guides/self-hosting/oauth/configuring-oauth.md for details (#45, #404)
CHANGE: --basic-auth realm now presented as the share token rather than as zrok in publicProxy frontend implementation