Merge branch 'feature/recorder' into 'master'

applications/gui2/src/inputoutput.cpp

applications/gui2/src/inputoutput.hpp

applications/gui2/src/modules/camera.cpp

applications/gui2/src/views/thumbnails.cpp

applications/tools/CMakeLists.txt

applications/tools/recorder/CMakeLists.txt

applications/tools/recorder/src/main.cpp

components/audio/include/ftl/audio/mixer.hpp

components/audio/include/ftl/audio/speaker.hpp

components/audio/src/speaker.cpp

components/common/cpp/include/ctpl_stl.h

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

components/net/cpp/src/peer.cpp

components/operators/src/weighting.cu

components/streams/include/ftl/streams/feed.hpp

components/streams/include/ftl/streams/filestream.hpp

components/streams/include/ftl/streams/receiver.hpp

components/streams/include/ftl/streams/stream.hpp

components/streams/src/baserender.hpp

components/streams/src/builder.cpp