Implements #196 stream capturing

This now allows all reconstruction streams to be recorded to file. Currently playback within reconstruct is not completed, although a separate player app is included.

added 6 commits

• ea4c799e...bb35a4b5 - 4 commits from branch master
• 968cd33d - Save and read pose and calibration in stream
• 302f396d - Merge master

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added 2 commits

• bd2684b6 - Display time in playback
• e72a1566 - Send I-frames for channel 2 also

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added 1 commit

• 8df70bb1 - Display depths in player

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enabled an automatic merge when the pipeline for 8df70bb1 succeeds

merged

mentioned in commit e15e48db