[helpers] Native Request and FormData helpers

[Hebilicious]

Describe the feature

I've implemented the following in https://github.com/Hebilicious/form-actions-nuxt

export async function getRequestFromEvent(event: H3Event) {
  const url = new URL(getRequestURL(event))
  const method = getMethod(event)
  const body = method === "POST" ? await readRawBody(event) : undefined
  return new Request(url, { headers: getRequestHeaders(event) as any, method, body })
}

export async function getFormData(event: H3Event) {
  return (await getRequestFromEvent(event)).formData()
}

Which directly enables great DX around forms :

const eventHandler = event => {
	const formData = await getFormData(event)
	const email = formData.get("email") as string
	const password = formData.get("password") as string
	return { email }
}

Additional information

• Would you be willing to help implement this feature?