Streamline permission requesting / handling on mobile

[hakoptak]

Describe the project you are working on:
A microphone-driven mobile game.

Describe the problem or limitation you are having in your project:
Because my game needs access to the microphone, Apple demands asking for permission. This feature already implemented in the Android OS api, but not iOS.

Source:
https://developer.apple.com/documentation/avfoundation/cameras_and_media_capture/requesting_authorization_for_media_capture_on_ios?language=objc

Describe the feature / enhancement and how it helps to overcome the problem or limitation:
To make this work the following methods must be implemented:

• bool request_permission(string)
• bool request_permissions()
• string[] get_granted_permissions()

However, it would be cleaner if the mobile OS api could be refactored into:

• bool request_permission(string)
• bool is_permission_granted(string)

This makes handling permissions more specific. Also, the existing request_permissions() is opaque.

Describe how your proposal will work, with code, pseudocode, mockups, and/or diagrams:
Like in the Android os api, we could start with implementing the RECORD_AUDIO permission in iphone_os.h and iphone_os.mm.

Source: https://developer.apple.com/documentation/avfoundation/avaudiosession/1616601-requestrecordpermission?language=objc

If this enhancement will not be used often, can it be worked around with a few lines of script?:
This is a core feature.

Is there a reason why this should be core and not an add-on in the asset library?:
This is a system feature.