Implement Anonymous user tracking

[hani-iterable]

Description

• Release Notes

We have successfully implemented functionality for tracking Anonymous User events.

Create a known user with UUID if any criteria match and sync all the events over the iterable dashboard.

We've created a document for Anonymous User Event Tracking.

Develop a unit test case to verify the logic for matching criteria.

• Test Steps

Trigger any event without logging into the SDK. If the criteria match your event, then it will create a user with your UUID. Using that UUID, you can search users over the iterable dashboard. Here you can see the event list in history.

Jira Tickets:

• MOB-8017

[hani-iterable]

We can close this PR as it includes all the changes related to the issue. You can find the updated changes in PR.