Test previewHtml

[jrieken]

• mac @bpasero
• linux @aeschli
• windows @kieferrm

Under the hood the previewHtml command use a web view instead of an iframe. Test that

• existing extensions like preview svg, preview css etc still work
• a web view cannot ruin the outer VS Code process, with an while(true); for instance
• a web view can run scripts
• check items from the previous assignment