docs: add bun to list of runtimes

[colinhacks]

• I understand that this repository is auto-generated and my pull request may not be merged

Changes being requested

• Add Bun to list of runtimes
• Add instructions for Bun package manager
• Update existing Bun ecosystem test where npm is used instead of bun

Additional context & links

The openai package is now fully supported in Bun: https://bun.sh/blog/bun-v0.8.0#use-openai-in-bun

[rattrayalex]

Hey Colin! Thanks so much for adding support for File! We'll want to run some additional tests on our end to ensure that file uploads and other things work well in Bun before merging this, but otherwise LGTM – thanks for the contribution!

[rattrayalex]

Hi @colinhacks , our testing is showing that file uploads aren't working with Bun (tested on 0.8.1) – we were getting errors like filename not being found and request body being malformed.

Some repros:

const url = 'https://audio-samples.github.io/samples/mp3/blizzard_biased/sample-1.mp3';
const filename = 'sample-1.mp3';

const correctAnswer =
  'It was anxious to find him no one that expectation of a man who were giving his father enjoyment. But he was avoided in sight in the minister to which indeed,';
const model = 'whisper-1';

test('handles Response', async function () {
  const file = await fetch(url);

  const result = await client.audio.transcriptions.create({ file, model });
  expect(result.text).toBe(correctAnswer);
});

test('handles builtin File', async function () {
  const file = await fetch(url)
    .then((x) => x.arrayBuffer())
    // @ts-ignore avoid DOM lib for testing purposes
    .then((x) => new File([x], filename));

  const result = await client.audio.transcriptions.create({ file, model });
  expect(result.text).toBe(correctAnswer);
})

both give errors like so:

error: The browser (or proxy) sent a request that this server could not understand.
 code: "null"

[rattrayalex]

This has been done in a separate PR. Thanks @colinhacks !