Remove NSLogs and use Unified Logging

[TaskLocal]

Platform on which you observed the bug:

• iOS
• Device is not relevant for this bug

Describe the bug
Please switch over any NSLog to unified logging. The NSLog output is noisy.

https://developer.apple.com/documentation/os/logger

How to Reproduce
Run the example app and notice all the NSLog output

Expected behavior
Logging output should be configurable so that integrating apps can control when to display them in logs.

[samulimaa]

Hi, I have created an internal ticket for further implementation. TC-64220