Description

This implements a hotkeycontroller which is able to receive announcements from GUI and Player and enable or disable the exclusive mediakey tap only in particular circumstances - reducing the risk of affecting other apps.
Removed the media key processing from windowing since even if Kodi is running headless (and playing audio for example) it should still be able to trap media keys.

Motivation and context

Fix #24579

How has this been tested?

Runtime tested on macOS checking that if the kodi app is key (has focus) media keys work without opening the music app. if a file is not playing and Kodi is not focused mediakeys do not get piped to Kodi. If a file is playing and kodi is not focused, Kodi responds to media keys.

What is the effect on users?

Media keys should now work without affecting the music app.

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• Student submission (PR was done for educational purposes and will be treated as such)
• None of the above (please explain below)

Checklist:

• My code follows the Code Guidelines of this project
• My change requires a change to the documentation, either Doxygen or wiki
• I have updated the documentation accordingly
• I have read the Contributing document
• I have added tests to cover my change
• All new and existing tests passed