Move stream options and frame output structs to dedicated header(s)

[dvrogozh]

As discussed in:

• Make device interface generic #606 (comment)
• Make device interface generic #606 (comment)

A follow up after #606 - need to move the following structures to separate header(s) and break circular dependency between DeviceInterface.h and SingleStreamDecoder.h:

• SingleStreamDecoder::VideoStreamOptions
• SingleStreamDecoder::FrameOutput
• SingleStreamDecoder::FrameBatchOutput
• SingleStreamDecoder::AudioFramesOutput

CC: @scotts, @NicolasHug

[dvrogozh]

See #620 for the proposed fix.