Resolves #123 Adaptive bitrate

applications/vision/src/main.cpp

components/codecs/include/ftl/codecs/packet.hpp

components/common/cpp/include/ftl/threads.hpp

components/common/cpp/include/ftl/utility/rollingavg.hpp

components/net/cpp/include/ftl/net/peer.hpp

components/net/cpp/src/peer.cpp

components/net/cpp/src/universe.cpp

components/streams/CMakeLists.txt

components/streams/include/ftl/streams/netstream.hpp

components/streams/include/ftl/streams/sender.hpp

components/streams/src/adaptive.cpp

components/streams/src/adaptive.hpp

components/streams/src/netstream.cpp

components/streams/src/sender.cpp