chore: initializing react native package

Linear ticket https://linear.app/customerio/issue/MBL-444/initialize-react-native-package

Problem

As a react native CDP user I want to initialize the package using cdpApiKey and other config options as available. This should apply to both migrating users and new adopters. For migrating users, it is expected that they provide migrationSiteId. As this property is optional and is not added in configuration then native module will skip processing any unprocessed tasks in the queue and migration will not happen.

Exclusions

Functioning of initializing the package as native module is broken at the moment

About this PR

This PR :

Updates file name from CustomerioTracking to customerio-cdp to match with the new module and other platforms
Added code to initialize package
UI on settings screen to consume cdpApiKey - BLOCKED by the decision of whether to use current sample apps or new sample app for testing

Solution

Use package configuration to initialize the package.

Use case

import {
  CioLogLevel, CioRegion, CustomerIO, CioConfig
} from 'customerio-reactnative';

const config: CioConfig = {
    cdpApiKey: 'cdp_api_key', // Mandatory
    migrationSiteId: 'site_id', // For migration
    region: CioRegion.US,
    logLevel: CioLogLevel.Debug,
    trackApplicationLifecycleEvents: true,
    inApp: {
        siteId: 'site_id', // this removes the use of enableInApp and simplifies in-app configuration
    }
 };
CustomerIO.initialize(config)

Testing

The current flow of the modules is broken, making testing of the changes not possible at this time. Testing will be carried out at the end of this milestone, consolidated into a single branch and PR.

customerio / customerio-reactnative