feature/html iframe embed endpoint

[codebude]

• Added /embed route to backend
• Added embed api and Homarr to docs
• Implemented embed token logic in frontend
• Handle rotation of expired embed tokens
• Set auto complete behaviour on profile page
• Fix proxying of api docs via frontend
• Fix order of embed tokens and api keys in profile page view
• Updated embed api docs
• Updated embed api docs picture
• Profile menu entry for docs

[github-actions]

🧪 Test Results — 4bab3b7

✅ Backend (pytest) — 739 passed, 0 failed, 0 skipped (739 total)
✅ CLI (pytest) — 54 passed, 0 failed, 0 skipped (54 total)
✅ Frontend (vitest) — 382 passed, 0 failed, 0 skipped (382 total)
❌ E2E (Playwright) — 55 passed, 1 failed, 0 skipped (56 total)

Summary: 1230 ✅ passed, 1 ❌ failed (1231 total)

[github-actions]

🧪 Test Results — b8b9acc

✅ Backend (pytest) — 739 passed, 0 failed, 0 skipped (739 total)
✅ CLI (pytest) — 54 passed, 0 failed, 0 skipped (54 total)
✅ Frontend (vitest) — 382 passed, 0 failed, 0 skipped (382 total)
✅ E2E (Playwright) — 56 passed, 0 failed, 0 skipped (56 total)

Summary: ✅ All 1231 tests passed