Add Deep Time nodes

[falkhofmann]

Seems like some time nodes are working natively inside nuke:

• TimeOffset
• FrameHold
• FrameRange

whilst other are not working in terms of, can't be connected:

• retime
• timeecho
• timeclip
• frameblend
• timewarp

not sure what the definition is, but the first group has also a different node shape (group) while the ladder seems 2d op shaped.

i could imagine those tools handy when needed, but the question is, are those situation really happening.

On the other hand i read that the reason for not using deeps are the missing nodes to be in line with regular 2d behavior.

[falkhofmann]

[charlesangus]

The difference seems to be the first group deal with whole frames, while the second with subframes. I'm not sure I would see the use of frameblending a Deep, but who knows I guess.