Installation how-to video

Updated for the release of new features in the classic plugin as of June 2022.

**Need discussion.**

## Documentation
Content for the video tutorials is documented here:
https://docs.google.com/document/d/1ZGBgXEb60hJpV02QH6ORydbaNmWG7Ub2kAddbtyEG1k/edit?usp=sharing

## Use Case
Especially for users not familiar with a terminal and/or napari, it would be helpful to provide a video showing how to install the plugin as part of our docs. Inspiration: https://www.sciencedirect.com/science/article/pii/S0006349520300357#mmc1

This will expand to include videos showing new/existing features of the plugin and how to use them.

## Alternatives
Just having text instructions with/without screenshot images.