Update docs site to support mermaid

[adfoster-r7]

Update the docs site to support mermaid graphs

Before

Mermaid code snippets render as text

After

Mermaid code snippets render as an svg

Verification

• cd docs
• bundle
• bundle exec ruby build.rb --production --serve
• Verify the mermaid charts render at http://localhost:4000/docs/development/propsals/java-meterpreter-feature-parity-proposal.html#supporting-native-system-calls

[gwillcox-r7]

Nice I've been meaning to add some more charts to help document things on the website and was actually making some recently in my documentation. Will review this tomorrow and try get this in 👍

[gwillcox-r7]

Working like a charm and will be landing this now 🥳

[gwillcox-r7]

Release Notes

The docs site has been updated to support mermaid graphs for rendering diagrams to assist with explanations.