[Feature]: Add option to use handlebars for frames,dialogs and overlays

[eldritch-cookie]

Describe the Problem

currently the html.x family of function are somewhat painful to use as you need to either fetch any information used via either XMLHttpRequest or fetch or create the resource dynamically.

The Solution you'd like

#4084 added custom stat sheets and to do so it uses handlebars. it is my understanding that we need to install handlebars to compile the templates, as we already have this templating language available could we make it available for macros or javascript?

Alternatives that you've considered.

i can use a bundler to access all of npm but that requires a build step.

Additional Context

No response