pyreverse: colored classes and packages in HTML generated diagrams

[mamerzouk]

Current problem

In pyreverse, assuming we use --colorized and increase --max-color-depth, the .png generated diagrams use different colors. But the .html generated diagrams do not use multiple colors, they only use a single color.

Desired solution

When using use --colorized and increasing --max-color-depth with --output html, the generated packages.html and classes.html should have different colors.

More precisely, the node elements in CSS should have different stroke and fill colors, according to the --max-color-depth and the --color-palette.

Additional context

No response

[DudeNr33]

The HTML files are generated via MermaidJS, and the MermaidJSPrinter printer implementation currently does not support the colored output.
Looking at the documentation it should be possible to also implement colored output for Mermaid and therefore also for HTML.