Feature/add mermaid support for homebase

[shanonplace]

Purpose

Making Mermaid diagrams render as they are used a lot in README files and great for diagramming via plaintext

Approach

Added a new custom component to render the Mermaid code blocks

Testing steps

The example HOMEBASE entry that is installed with the app has a mermaid example, so just make sure that renders

Breaking Changes

Nope

Dependencies and/or References

Not sure what to put here that's not in the code diff. I don't have a ticket for it

Deployment

I don't believe so