Mikhail Bratchikov

Add mermaid diagrams rendering

3

[Mermaid](https://mermaid.js.org) diagram creation syntax. Supported by [GitHub](https://docs.github.com/en/get-started/writing-on-github/working-with-advanced-formatting/creating-diagrams)

Unfortunately adding 49 to versions `~/.local/share/gnome-shell/extensions/awesome-tiles\@velitasali.com/metadata.json` doesn't help anymore.