[BUG] Make plotly a (hard) dependency

[ai-idt]

Describe the bug
I installed panoptica yesterday (from pypi; v 1.2.0) into a new conda env (py3.10). Upon running panoptica, I received the following error:
"NameError: name 'go' is not defined"

To Reproduce
Steps to reproduce the behavior:

1. Install panoptica into a "fresh" environment
2. Run one the example notebooks

Expected behavior
panoptics analyses the masks and returns metrics :-)

Environment
fresh conda env, py310

operating system and version?

Ubuntu 22.04 LTS

Python environment and version?

fresh conda env, py310

version of panoptica ?

1.2.0 (from pypi)

Additional context
pip installing "plotly" solved the problem for me. I'd suggest to make plotly a requirement during pip install of panoptica to avoid this problem.