feat(*): added support for copying audio/subtitle streams and pause/abort (#1179)

* feat: added Makefile target for debian
* fix: fixed Dockerfile installing the wrong package
* feat: added hwaccel for encoder and decoder
* feat: added benchmark mode
* feat: removed hard-coded keyframe info
* chore: cleaned up headers and organized code
* style: cleaned up headers and includes
* feat: added a progress bar for CLI
* feat: removed atomicity requirements on processed frames
* feat: added pause and abort for CLI
* chore: updated default preset and crf settings
* feat: added support for copying audio and subtitle streams
* fix: fixed syntax issues for MSVC
* fix: fixed audio/subtitle timestamp rescaling

Signed-off-by: k4yt3x <i@k4yt3x.com>

include/conversions.h

@@ -1,7 +1,10 @@
 #ifndef CONVERSIONS_H
 #define CONVERSIONS_H
 
-#include <libavutil/frame.h>
+extern "C" {
+#include <libswscale/swscale.h>
+}
+
 #include <mat.h>
 
 // Convert AVFrame to another pixel format