Description

This adds raw developer identity in the request params as identity for v1/pageview calls
Removes identity from request params if tracking is disabled

When identity or raw developer id gets sent :

Scenario 1 : setIdentity gets called, any v1/pageview calls after setIdentity should include identity param and same value is stored in session storage
Scenario 2 : setIdentity gets called, any journeys shown( internally calls v1/pageview) should include identity param and same value is stored in session storage

When identity or raw developer id will not be sent :

Scenario 1 : logout is called, any v1/pageview calls will not include identity param and same value is removed from session storage
Scenario 2 : disabletracking(true) is called, any v1/pageview calls will not include identity param and same value is removed from session storage

Motivation and Context

:white_check_mark: story

:white_check_mark: Integration test

	Before	After
dist/build.min.js	77kb	77kb

:white_check_mark: My code follows the style guidelines of this project
:white_check_mark: I have performed a self-review of my code
:white_check_mark: I have commented my code, particularly in hard-to-understand areas
:white_check_mark: I have made corresponding changes to the documentation
:white_check_mark: I have added tests that prove my fix is effective or that my feature works
:white_check_mark: New and existing unit tests pass locally with my changes