chore(connect)!: drop support for node 14 and 16

[TillaTheHun0]

Node 14 is out of LTS beginning in April.

Once we drop support for Node 14, we can do some cool stuff with Readable Streams

This would be a BREAKING CHANGE:

1. drops support for Node 14 and 16

2. instead of storage.download always returning a ReadableStream, it would instead always return a hyper response shape:

{
  ok: boolean,
  status?: number,
  object?: ReadableStream
}

3. instead of storage.upload accepting a Uint8Array, it instead accepts a ReadableStream. This allows for streaming requests directly into storage.upload

To pass a Uint8Array into storage.upload, simply transform it into a ReadableStream. For example, using the built-in Response:

const arrBuffer = new Uint8Array(...)

const stream = new Response(arrBuffer).body

Closes #554