Rework /html/forms.js script

[gulachek]

I'd rather that /html/forms.js is not required to be included just to do form submissions or web socket connections. The server endpoints should be documented so that these more foundational things can be set up.

Furthermore, .js is not going to cut it with the current script ecosystem. There should probably be a few different options for script inclusion that can be available at different URLs.

• Something that sets a global htmlForms or something
• AMD/UMD module (unsure if UMD would automatically do the above)
• ES Module support

Then a consumer can import the exposed module however the consumer would like.

[gulachek]

It might even be better to have this be a node module. That way types can be exposed for TypeScript more easily, and users could bundle/transform scripts as needed if a few options above don't meet the needs.