Add mechanism to send assist data to a IntelligenceService

- Proxy requested assist data from swipe up through the the
  IntelligenceServiceManager to AiAi for each activity that we receive
  assist data for (the AssistDataReceiver to be removed later once AiAi
  implements the new IntelligenceService interface).

Bug: 117268952
Test: Build dummy intelligence service, ensure that we get capture event
      on swipe up.

Change-Id: Iec29792932d30e94a702bd5079711c6615d0738a