Add support for Mermaid's quadrantChart diagram type

[bhargavbh]

I have used quadrantChart in my slides. It does not seem to work, while other types from the copy-paste template work. It does not seem to work, while other types from the copy-paste template work. Would be great if support could be added for it.
Here is the mermaid snippet that can be used for testing:

quadrantChart
    title Verification Tools
    x-axis Low Automation --> High Automation
    y-axis Low Expressiveness --> High Expressiveness
    
    Isabelle: [0.15, 0.8]
    Coq: [0.18, 0.75]
    Quint/TLA+: [0.23, 0.6]
    MIRAI: [0.58, 0.34]
    KANI: [0.62, 0.4]
    Crux-MIR: [0.67,0.36]
    Flux: [0.67,0.30]
    State-Right: [0.3, 0.54]
    Prusti: [0.4,0.48]
    Substrace: [0.9,0.23]
    Flowistry: [0.8, 0.25]
    Clippy: [0.99,0.17]