Add Permissions

[Maingron]

Add a permission system with which programs can request permissions like access to camera, microphone or others.

This includes:

• Sensors (which is one for all: accelerometer, ambient-light-sensor, battery, gyroscope, magnetometer, web-xr)
• GPS (geolocation)
• microphone (Maybe handle through MainOS Driver)
• camera (Maybe handle through MainOS Driver)
• display-capture
• midi
• usb (Maybe handle through MainOS)
• screen-wake-lock so the user doesn't unexpectedly get a screen that stays on

This should not be too hard using Permissions Policy.

Some references:

https://github.com/w3c/webappsec-permissions-policy/blob/main/features.md
https://www.permissionspolicy.com/
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Feature-Policy

Permissions intended to be disabled globally (for now) include:

• allow-top-navigation
• oversized-images
• payment
• probably speaker-selection

Think about:

• picture-in-picture
• web-share