[DIP] Create methods for splitting and merging channels in Image Container

[meshtag]

Is your feature request related to a problem? Please describe.
As of now, we cannot work with individual channels directly in a multi-channel image stored in the image container.

Describe the solution you'd like
We should have separate methods for splitting and merging channels from/in the image container. Similar to cv2.split() and cv2.merge() for OpenCV's Mat container.

[zhanghb97]

@meshtag Thanks!
ping @NK-MXD @FlagerLee

[meshtag]

What is the status on this? Was there any work done in this direction? (/cc @NK-MXD @FlagerLee )

[FlagerLee]

I'm currently busy on other project and not involved in development of DIP. @meshtag

[zhanghb97]

@NK-MXD and @FlagerLee have not continued working in this direction.