Add new module stainwarpy/register

[tckumarasekara]

This PR adds,

• stainwarpy/register

stainwarpy
modules for registration of H&E tissue images with their corresponding multiplexed images and to transform the segmentation masks of one image type to be able to use with the other type.

• As first step, stainwarpy/extractchannel extracts the alignable channel (preferably DAPI) from multiplexed image.
• As second step, stainwarpy/register registers H&E and multiplexed images and output the registered image, transformation maps and evaluation metrics for the registration performed.
• As third step, stainwarpy/transformsegmask transforms the segmentation mask of one image using the transformation maps created from the second module.

PR checklist

Closes #9702

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