Rewriter: Expose rewrite/rewriteString functions and refine types

[marcoroth]

This pull request exposes new rewrite and rewriteString functions in the @herb-tools/rewriter package. This allows for more ergonomic use of rewriters.

Examples:

rewrite:

import { Herb } from "@herb-tools/node-wasm"
import { rewrite } from "@herb-tools/rewriter"
import { tailwindClassSorter } from "@herb-tools/rewriter/loader"
 
await Herb.load()

const template = `<div class="text-red-500 p-4 mt-2"></div>`
const parseResult = Herb.parse(template)

const { node, output } = await rewrite(template, [tailwindClassSorter()])

output
// Result: "<div class="mt-2 p-4 text-red-500"></div>"

rewriteString:

import { Herb } from "@herb-tools/node-wasm"
import { rewrite } from "@herb-tools/rewriter"
import { tailwindClassSorter } from "@herb-tools/rewriter/loader"
 
const template = `<div class="text-red-500 p-4 mt-2"></div>`

const output = await rewriteString(Herb, template, [tailwindClassSorter()])
// Result: "<div class="mt-2 p-4 text-red-500"></div>"

Additionally, it cleans up the interface of the rewriters to accept and return Node instead of ParseResult. This allows for more flexibility and also allows for partial rewrites of a tree/document.