Add simultaneous multiple camera connection

[gkoh]

With the shift to expose the EPS32's underlying FreeRTOS, we can further abstract furble's components in meaningful ways.
By adding per-camera tasks and funnelling UI inputs through a command queue, it will be possible to connect to and control multiple cameras at the same time.

To preserve the current 'easy' 'click-click-click' experience, hide the feature behind a setting and default to false.

[matthudsonau]

Had someone ask about doing this last month. Good timing

[gkoh]

Had someone ask about doing this last month. Good timing

Ha!
All the refactoring over the past few months has been aimed at implementing this 🙂

Will be great to get real-world feedback on it when it's done.

[matthudsonau]

Well, once work gets done with firing us (long story) I'll hopefully have a bit of time to test things

[gkoh]

Well, once work gets done with firing us (long story) I'll hopefully have a bit of time to test things

😮

[gkoh]

A pre-release with this feature is in 2.2.0-rc2