Document napari plugin

[niksirbi]

Description

What is this PR

• Bug fix
• Addition of a new feature
• Other: Documentation

Why is this PR needed?

Closes #283

What does this PR do?

• Modifies installaiton instructions to account for the napari plugin
• Add napari-video and pyvideoreader to the [napari] extras dependencies
• Adds a new page on the "User guide" documenting how to install and use the movement plugin for napari

References

Please reference any existing issues/PRs that relate to this PR.

How has this PR been tested?

Please explain how any new code has been tested, and how you have ensured that no existing functionality has changed.

Is this a breaking change?

If this PR breaks any existing functionality, please explain how and why.

Does this PR require an update to the documentation?

If any features have changed, or have been added. Please explain how the
documentation has been updated.

Checklist:

• The code has been tested locally
• Tests have been added to cover all new functionality
• The documentation has been updated to reflect any changes
• The code has been formatted with pre-commit

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud