[REQ] New Lambda - Markdown to HTML

Is your feature request related to a problem? Please describe.

Markdown used in descriptions is not always desired in the output from templates as the resource that the template is creating may not support markdown.

Describe the solution you'd like

A lambda that converts markdown to HTML would be very beneficial in cases like this.
ideal invocation would be like:

{{#lambda.mdToHtml}}{{{appDescription}}}{{/lambda.mdToHtml}}

Describe alternatives you've considered

I can not think of an offhand alternative than doing this with a lambda, but if there are any ways, I would love to hear them.

Start by locating the template-lambda entry points in OpenAPI Generator and checking how existing lambdas are implemented. Use the invocation shown in the issue as the first behavior to trace, then add focused coverage that verifies Markdown descriptions produce HTML output.