Add login funnel

[lmuntaner]

Motivation

Create a funnel to track the user during logging from an application.

Changes

This pull request introduces significant enhancements to the login flow by integrating a new analytics funnel to track user interactions.

Key changes include:

• src/frontend/src/utils/analytics/loginFunnel.ts: Defined the LoginEvents enum and created a new Funnel instance for login events to standardize the logging of user interactions during the login process.
• src/frontend/src/components/authenticateBox/index.ts: Added triggers for various login events such as TriggerUseExisting, TriggerListItem, and GoUseExisting to the loginFunnel to track user actions during the authentication process.
• src/frontend/src/flows/authorize/postMessageInterface.ts: Initialized the loginFunnel in the authenticationProtocol function to start tracking login-related events.
• src/frontend/src/utils/iiConnection.ts: Replaced several analytics.event calls with loginFunnel triggers to streamline the event logging process and ensure consistency.

Tests

Tested locally that events are triggered as expected along the login flow, but not registration (except the "start-login" which is expected to be triggered)

---

🟡 Some screens were changed

[Copilot]

Pull Request Overview

This pull request adds a new login funnel to standardize and improve logging of user interactions during the login process. Key changes include:

• Creating a dedicated Funnel and LoginEvents in the analytics module.
• Replacing several direct analytics event calls with loginFunnel trigger invocations across multiple files.
• Initializing and integrating the login funnel in authentication flows and components.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/frontend/src/utils/iiConnection.ts	Replaces analytics event calls with loginFunnel triggers for webauthn start events but removes error event logging.
src/frontend/src/utils/analytics/loginFunnel.ts	Introduces the LoginEvents enum and a new loginFunnel instance for consistent tracking.
src/frontend/src/flows/authorize/postMessageInterface.ts	Initializes the login funnel within the authentication protocol with a TODO to add origin data.
src/frontend/src/components/authenticateBox/index.ts	Adds loginFunnel trigger calls for various user actions during the authentication flow.

Comments suppressed due to low confidence (1)

src/frontend/src/utils/iiConnection.ts:470

• The logging for lookup errors has been removed without a corresponding loginFunnel trigger. Consider adding an appropriate error trigger to maintain consistent event tracking for failure scenarios.

analytics.event("login-passkey-error-lookup");

[LXIF]

LGTM!