Add PrivacyInfo.xcprivacy for reason API usage

[ilpeppone7]

Proposal

Hi team. Maybe you already knew it, or maybe you're already working on it, but I couldn't find any related issue. From May 1st, Apple will implement a reason API usage control in his review process, and will block any update that doesn't contain this kind of declaration.

This is the reference: https://developer.apple.com/documentation/bundleresources/privacy_manifest_files/describing_use_of_required_reason_api

Are there any plans for this file to be implemented? Thank you.