v3.9.1 Fix thumbnails and streaming

Fixes

• Fix exceptions thrown when trying to stream the camera. While liveview is still not implemented (except for the original 1st Generation cameras), an interstitial is more consistently displayed. This allows for adjusting the settings.
• This should also remediate issues related to the thumbnails not displaying. Homekit appears to avoid refreshing the thumbnail if it believes the streaming from the camera caused an error.

Up Next

• privacy mode and disable thumbnail refresh is going to be deprecated and replaced with two new settings:
  • show-thumbnails which will show the camera thumbnails a) only when the camera is armed (+ enabled), b) always and c) never. The old Privacy-Mode will be the default value so that when the camera is disarmed, the thumbnail won't show.
  • thumbnail-refresh which will likewise only refresh the camera thumbnails when the camera is enabled, always or never. This will allow the thumbnail to be periodically refreshed even if the system is not armed (motion trigger is disabled).
• Per camera setting is also being explored with the UI config integration