feat: add Google login flow and inbox creation

[scmmishra]

This PR adds the following changes

1. Refactor microsoft/callbacks_controller to move common logic to oauth_callback_controller, most of the logic is re-used for Google
2. Add UI components, googleClient and I18n entries for Google login
3. Add Google callback and inbox creation
4. Add a joinUrl utility along with specs (need to move it to utils)
5. Add GoogleConcern, Google::AuthorizationsController and Google::CallbacksController

Note: The UI is hidden for now, so we can merge this without any hiccups, to enable it just revert the commit 05c18de

Preview

CleanShot.2024-06-03.at.12.22.48.mp4

Linear Tickers

CW-3370
CW-3371

[linear]

CW-3369 Email fetch service and Refresh token service for Google

[scmmishra]

@muhsin-k can you review and test this? Revert the 05c18de commit and it will enable the Google flow

[scmmishra]

@pranavrajs do you wanna take a peek at the code? This is tested on staging

[github-actions]

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