Better SSR Support

One of the main points of rehtm is that it supports SSR. In an SSR-context, it might easily happen that there is no global document object, which is referenced in the following parts in the code:

rehtm/src/factory/dom.ts

Line 8 in 4238ce1

const node = document.createElement(type)

rehtm/src/factory/dom.ts

Line 40 in 4238ce1

const child = document.createTextNode(value.toString())

rehtm/src/template/recipe.ts

Line 12 in 4238ce1

this.template = document.createElement('template')

rehtm/src/template/recipe.ts

Line 46 in 4238ce1

const target = document.importNode(this.template.content, true)

This should be resolved so that a document object can be provided. I suspect since all of these call sites center around some DOM factory, perhaps a document property can be added to DOMFactory type, bubbling upwards the API so that any user can provide a custom API (falling back to the global document if not provided), potentially adding some generators alongside exported constants, producing something like this in the end:

const { html, template, recipe, cached } = use(document)