Ability to override the mermaid initialize configuration

[johannesprinz]

Some modern tooling like the C4 Model structurize CLI render mermaid diagrams with inline styles controlled by inline html tags within mermaid diagrams. This requires the following configuration to be injected into the mermaid.initialize function:

{
  startOnLoad: false,
  securityLevel: 'loose'
}

Any chance of modifying mermaid-render.html line 10 to allow a way to inject a custom configuration.

Suggest some way to populate mermaidConfig from the mermaid file or organizational setting and inject below:

    <script>mermaid.initialize(mermaidConfig || {startOnLoad:false});</script>