[import-bytes] add bytes sec-fetch-dest and accept

[styfle]

Related PRs

• [import-bytes] add import bytes html#11657
• [import-bytes] add bytes destination w3c/webappsec-csp#803
• [import-bytes] add initial tests for import bytes proposal web-platform-tests/wpt#56938

Checklist

• At least two implementers are interested (and none opposed):
  • Deno
  • Bun
  • WebKit
• Tests are written and can be reviewed and commented upon at:
  • [import-bytes] add initial tests for import bytes proposal web-platform-tests/wpt#56938
  • [import-bytes] add initial tests for import bytes proposal tc39/test262#4648
• Implementation bugs are filed:
  • Chromium: …
  • Gecko: …
  • WebKit: …
  • Deno (not for CORS changes): …
• MDN issue is filed: …
• The top of this comment includes a clear commit message to use.

(See WHATWG Working Mode: Changes for more details.)

---

Preview | Diff

[annevk]

This looks good, but OP still has a lot of unchecked checkboxes and we probably want to land this at the same time as the other PRs.