Vixen project

Using the export function from sequence editor, all output channels from all controllers can be exported with specific time interval.

The timebase used for exportation was a manual timebase, so the exported output interval is kept constant and unrelated to export time.

The export pipeline only supports 8-bit commands, might be a potential problem?

Another export format was implemented, to match the playback format used in TCPLinky controller. Ref: 830a17bb445aab1c98ddd44540cc77a0b701177b

The resolutionComboBox in the original application can only specify a time interval of 25, 50 or 100 ms. It was modified to allow custom values. Ref: e882fd9d429b9c00a0fd549e46805058c82849b2