feat: enable twitter social auth

[RobChangCA]

Pull Request Checklist

• Did you add new tests and confirm existing tests pass? (yarn test)
• Did you update relevant docs? (docs are found in the site folder, and guidelines for updating/adding docs can be found in the contribution guide)
• Do your commits follow the Conventional Commits standard?
• Does your PR title also follow the Conventional Commits standard?
• If you have a breaking change, is it correctly reflected in your commit message? (e.g. feat!: breaking change)
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Setup:
You will need to follow the guide here to enable auth0 and twitter in your application. https://accountkit.alchemy.com/signer/authentication/auth0

Testing steps:
You should be able to toggle on and off twitter in the sidebar.
You should be able to sign in to twitter via the X button in the authcard.

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PR-Codex overview

This PR introduces support for Twitter authentication in the user connection system. It updates the configuration, adds a Twitter icon, and modifies the authentication component to handle Twitter as an OAuth method.

Detailed summary

• Updated UserConnectionAvatar.tsx to display "User" if user.email is null.
• Modified config.tsx to include twitter in oAuthMethods.
• Enhanced sections.ts to handle Twitter authentication.
• Added TwitterIcon component in twitter.tsx.
• Updated Authentication.tsx to toggle Twitter authentication with a new method.

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