QA App Improvements: migrate to Kotlin and Jetpack Compose, add local test deeplink

[graciecooper]

Description of Changes

(briefly outline the reason for changes, and describe what's been done)

Breaking Changes

• None

Release Checklist

Prepare:

• Detail any breaking changes. Breaking changes require a new major version number, and a migration guide in wiki / README.md

Bump versions in:

• CHANGELOG.md
• gradle.properties
• add links to newly created wiki pages to readme
• Update major version numbers in wiki (basic integration + push guides)

Integration tests

T&T Only

• Init SDK with only optimove credentials
• Associate customer
• Associate email
• Track events

Mobile Only

• Init SDK with all credentials
• Track events
• Associate customer (verify both backends)
• Register for push
• Opt-in for In-App
• Send test push
• Send test In-App
• Receive / trigger deep link handler (In-App/Push)
• Receive / trigger the content extension, render image and action buttons for push
• Verify push opened handler

Deferred Deep Links

• With app installed, trigger deep link handler
• With app uninstalled, follow deep link, install test bundle, verify deep link read from Clipboard, trigger deep link handler

Combined

• Track event for T&T, verify push received
• Trigger scheduled campaign, verify push received
• Trigger scheduled campaign, verify In-App received

Release Procedure

• Squash and merge dev to master
• Delete branch once merged