Adding more viz methods and having report generation

[Div12345]

Describe the problem

• Adding more methods to visualize the different connectivity measures, especially for over time since there already exist some techniques for over epochs.
• Generating reports such as mne.Report for a nice final presentation of all the connectivity calculations.

Describe your solution

• Interactive plots like the raw.plot(), that allows moving through the connectivity value over epoch, frequencies, time, channels.
• Simply to use the mne.Reports function itself, it might be possible to have a method that adds the custom figure into it. Maybe it would be nice if this method automatically adds the visualisation for the raw as well as the connectivity. I see the report generation as one of the most high level features that can be directly shared with even non-experts with easy full interpretation.

[adam2392]

Adding additional visualization is a good idea, but definitely will take quite a bit of work. I think some basic visualizations can be done though, for example: square heat maps of the connectivity structure