Support `this.html` highlighting

[brettz9]

Summary

Allow the likes of:

this.html`<b></b>`;

...to have content syntax-highlighted.

Motivation

Per https://github.com/WebReflection/hyperHTML-Element and as convention for hyperHTML proper , there is an html method, but it won't be highlighted.

Describe alternatives you've considered

No good alternatives. Could assign to html, but awkward to use for each method:

const html = this.html.bind(this);

Additional context

Thanks!