Severity Analytics Panel

* [ ] Discuss and finalize list of `info-graphics` we want in the Severity Analytics Panel in order to finalize the fields for related models and endpoints
* [ ] Create the Panel UI

This panel focuses on vulnerability trends, severity distribution, exploitability insights and weakness classification analysis.
Kindly leave your thoughts and recommend other charts you may have in mind in the comments.

#### Draft List:

**CVSS Score Distribution Scatter Plot**

* Shows the distribution of advisory severity scores across the dataset.
* `Ref`: https://www.cvedetails.com/cvss-score-charts.php

Related: https://github.com/aboutcode-org/vulnerablecode/issues/1258