MCT Adaptation issues: Realtime subscriptions <Cubsat issue>

[mudinthewater]

MCT only makes queries for channels that are actively in view. In realtime mode, MCT subscribes to channels in active view instead.

The MCT adaptation is currently subscribing to a websocket and receiving all telemetry on that socket then filtering for subscribed channels with a loop.

AIT core should manage the subscribed channels for each client: NASA-AMMOS/AIT-Core#357
MCT adaptation should use filters instead of loops for received telemetry.
MCT adaptation should pass subscriptions on to AIT-Core to be managed there instead of clientside.