[Features] Image registration

[Mr-Milk]

Is your feature request related to a problem? Please describe.

Image registration of two or more WSIs can be useful for many future applications:

1. Study of organ axis
2. 3D histology

Describe the solution you'd like

Potential solutions:

• Valis
• Examples in TIAToolbox: https://tia-toolbox.readthedocs.io/en/latest/_notebooks/jnb/10-wsi-registration.html

Basic Example

import lazyslide as zs

wsi1 = zs.open_wsi("wsi1.svs")
wsi2 = zs.open_wsi("wsi2.svs")
wsi3 = zs.open_wsi("wsi3.svs")

zs.tl.image_registration([wsi1, wsi2, wsi3])